Slayers is epic level DnD characters wandering around... its the literal concept behind it. So being disappointed that your mid teens characters don't measure up is actually the point. There are reasons she has cultists at age 12 thinking she is the godess off destruction... all those bounty hunters she keeps one shotting are in there midteens.
They did make your target wanted character type... they are called Psionic Warriors. Just use the 3rd edition version of the psionics hand book. the 3rd and a half edition one is fully capable of making you ban psionics forever... seriously they snorted DBZ tapes when they wrote that thing.. The self healing thing is a first level power that needs an 11+ Con score and does one of three things (heal 1d8 on self, heal one point temporarily lost ability score, or +1 bonus on your next save versus posion or disease. )
Psionics are set up different from other casting classes... for instance no waste, Abilities manifested from your power point pool (P^3).. first level cost 1 point 3 for second and so on. There are a load of feats that are usable as long as your P^3 is high enough. For instance, a 1st level takable one that as long as you keep a single unspent point around you get +4 armor (works versused noncorporal threats, basically always on mage armor) ability... there are furthur feats to add +2 to this as long as you keep an increasing amount in your P^3, highest applicable version works. Add in fun things like being able to charge up walls and across the ceiling (as long as you stop on flat ground, otherwise gravity happens) and the fun of the prestige classes like the one that allows you to manifest 0-3rd level powers for free... or be fire (fire fire bolts, walk on firey foot steps through the air, toss people around with a fire whip made of fire, and turn into a fire elemental of your hit dice). Control fire (length concentration, 2nd level) lets you make things out of fire (with a scupture check) and you can off entire encounters with their own torch... lots of fun there... not counting the fun of control sound. Its also intresting because each school of psionics has a different main stat... meaning you have to actually ponder which stat gets that every 4 levels increase.
Anyway, point buy systems have a fatal flaw... its far, far too easy to end up spending points on things that never come up again... or be forced into builds by the GM. Personally I don't plan ahead that far, mostly because I do builds in response to what is happened to the character. That would be because of something the dice do to the game... trends. The first time I played my guy could only die to area effect attacks and only when level 6... It got so bad my guy got a bonus feat in 2nd edition.... may gain level 6 cleric instantly without training the second he gets enough exp. Considering this was a DM that favored takes X amount of days/weeks to gain level X by training... that character broke the system by existing. Also, whenever he ran into a roll percentage effect he'd automatically roll whatever number caused him to shrink permently.
Other things include, everytime someone declared they where moving silently they walked into a physical trap, then died to the second one... after the sceond guy died that way (same player) all the psionic characters (who don't get move silently even as cross class) came to the conclusion that 'moving silently' was a code phrase for martyring myself to traps. A running not gag of if your characters stats added up to something in the mid 70s or higher... they would die horribly to a freak run of 1s and 20s with in an hour and a half. No exceptions... I saw a man near tears for rolling a character with 15, 16, and the all 18s as stats. It was a beutiful death sentence.
I tried hunters once (the human side of White Wolf) and discovered a trend of alignment good (will attack me for real), neutral (knock out me out), evil (will manage to get killed the round before I get there or be completely unable to hurt me... or just though I was completly hilarious,) It was at that point I learned the Meow Mix song was actually a detect alignment spell. No, its more the RNG messing with the dice than the GM/DM... I've always wanted to play Paranoia... in part because I'm convinced I will somehow manage to get Freind Computer to order itself to the execution chamber entirely by dice rolls and warped logic, by accident.
As spell check is starting to ignore me I'll end this...I'll agree its likely an issue of scale your having in DnD... have you actually tried making a character that does what you want it to and seeing what level it ends up?
They did make your target wanted character type... they are called Psionic Warriors. Just use the 3rd edition version of the psionics hand book. the 3rd and a half edition one is fully capable of making you ban psionics forever... seriously they snorted DBZ tapes when they wrote that thing.. The self healing thing is a first level power that needs an 11+ Con score and does one of three things (heal 1d8 on self, heal one point temporarily lost ability score, or +1 bonus on your next save versus posion or disease. )
Psionics are set up different from other casting classes... for instance no waste, Abilities manifested from your power point pool (P^3).. first level cost 1 point 3 for second and so on. There are a load of feats that are usable as long as your P^3 is high enough. For instance, a 1st level takable one that as long as you keep a single unspent point around you get +4 armor (works versused noncorporal threats, basically always on mage armor) ability... there are furthur feats to add +2 to this as long as you keep an increasing amount in your P^3, highest applicable version works. Add in fun things like being able to charge up walls and across the ceiling (as long as you stop on flat ground, otherwise gravity happens) and the fun of the prestige classes like the one that allows you to manifest 0-3rd level powers for free... or be fire (fire fire bolts, walk on firey foot steps through the air, toss people around with a fire whip made of fire, and turn into a fire elemental of your hit dice). Control fire (length concentration, 2nd level) lets you make things out of fire (with a scupture check) and you can off entire encounters with their own torch... lots of fun there... not counting the fun of control sound. Its also intresting because each school of psionics has a different main stat... meaning you have to actually ponder which stat gets that every 4 levels increase.
Anyway, point buy systems have a fatal flaw... its far, far too easy to end up spending points on things that never come up again... or be forced into builds by the GM. Personally I don't plan ahead that far, mostly because I do builds in response to what is happened to the character. That would be because of something the dice do to the game... trends. The first time I played my guy could only die to area effect attacks and only when level 6... It got so bad my guy got a bonus feat in 2nd edition.... may gain level 6 cleric instantly without training the second he gets enough exp. Considering this was a DM that favored takes X amount of days/weeks to gain level X by training... that character broke the system by existing. Also, whenever he ran into a roll percentage effect he'd automatically roll whatever number caused him to shrink permently.
Other things include, everytime someone declared they where moving silently they walked into a physical trap, then died to the second one... after the sceond guy died that way (same player) all the psionic characters (who don't get move silently even as cross class) came to the conclusion that 'moving silently' was a code phrase for martyring myself to traps. A running not gag of if your characters stats added up to something in the mid 70s or higher... they would die horribly to a freak run of 1s and 20s with in an hour and a half. No exceptions... I saw a man near tears for rolling a character with 15, 16, and the all 18s as stats. It was a beutiful death sentence.
I tried hunters once (the human side of White Wolf) and discovered a trend of alignment good (will attack me for real), neutral (knock out me out), evil (will manage to get killed the round before I get there or be completely unable to hurt me... or just though I was completly hilarious,) It was at that point I learned the Meow Mix song was actually a detect alignment spell. No, its more the RNG messing with the dice than the GM/DM... I've always wanted to play Paranoia... in part because I'm convinced I will somehow manage to get Freind Computer to order itself to the execution chamber entirely by dice rolls and warped logic, by accident.
As spell check is starting to ignore me I'll end this...I'll agree its likely an issue of scale your having in DnD... have you actually tried making a character that does what you want it to and seeing what level it ends up?