One, I think your underestimating how much people are going to read into her back story file... I mean true or not is subjective and 'common sense' is going dictate that even if she isn't lieing, or misremembering what happened, her existence is full of horrible, horrible things that have happened to her and around her. She should be a complete basket case. Ignoring the massive psychological trauma she has largely shrugged off and actually dealt with and that... Then think about how many issues she has had with authority figures... her list of jobs (government head hunter, blood sport racing star (which is likely to be the single best documented portion of her life), government assassin... then things get really weird)... all the freaky body mods and whatever that crazy, flan obsessed Nova guy has done to her... and the medtechs and head shrinks are gong to have a field day with her.
Add in she fought largely so it could all go white (seriously berserker mode there)... let alone the actual explanation: "By flipping out like a ninja and chopping off people's heads, I was actually reforging neural pathways (damaged by getting shot down during a nuclear, orbital cannonball attempt (brainwashing made me do it... no I'm dead serious) and spending something like 200 years in a garbage heap on barely acquit life support.". and of course her trying to explain that she is from some hell future Earth that was stuck is a solar system run by crazy immortal people and how she changed the solar system by participating in a killer game show.
She'll run into the same problem people do trying to explain Negima without making it sound wrong.
Not being completely aware of most of those cyborgs you mentioned, I can't make specific comments on them, but remember that you are talking about a combat style for full conversion cyborgs and lots of those moves can give you brain damage and make you go crazy. It also take a long, long time to train you to competent level.
On a different note... seeing the tech involved in Alita's later bodies might explain what Light was going for with the X project. All in all keeping a lid on the tech from Alita's home solar system is going to be a nightmare. The sheer easy immortality can be obtained there is just horrifying. you could probably make the second half of the plot dealing with immortalfied dimension hopping nutcases going around inter dimensionally wreaking havoc and running into the people who have to deal with them. Trying to extract there agent from that solar system is going to be a mess...
Add in she fought largely so it could all go white (seriously berserker mode there)... let alone the actual explanation: "By flipping out like a ninja and chopping off people's heads, I was actually reforging neural pathways (damaged by getting shot down during a nuclear, orbital cannonball attempt (brainwashing made me do it... no I'm dead serious) and spending something like 200 years in a garbage heap on barely acquit life support.". and of course her trying to explain that she is from some hell future Earth that was stuck is a solar system run by crazy immortal people and how she changed the solar system by participating in a killer game show.
She'll run into the same problem people do trying to explain Negima without making it sound wrong.
Not being completely aware of most of those cyborgs you mentioned, I can't make specific comments on them, but remember that you are talking about a combat style for full conversion cyborgs and lots of those moves can give you brain damage and make you go crazy. It also take a long, long time to train you to competent level.
On a different note... seeing the tech involved in Alita's later bodies might explain what Light was going for with the X project. All in all keeping a lid on the tech from Alita's home solar system is going to be a nightmare. The sheer easy immortality can be obtained there is just horrifying. you could probably make the second half of the plot dealing with immortalfied dimension hopping nutcases going around inter dimensionally wreaking havoc and running into the people who have to deal with them. Trying to extract there agent from that solar system is going to be a mess...