One point I don't think I remember having seen mentioned yet: the "advanced technology doesn't work at Hogwarts because of all the magic" thing.
While, yes, Washuu could get around that if need be, that doesn't mean that her existing/baseline/default equipment - such as whatever she's likely to have provided Harry with by the time he goes there, unless she's seen (a lesser version of?) the same effect before - is going to be immune to the effect. It could, in fact, be even more susceptible, simply by being so much more finely detailed and precise, unless specially "hardened" somehow. It really all depends, ultimately, on exactly how that anti-technology side effect actually works... and I don't think I've ever seen a good model or explanation of that, in or out of fanfic.
That's talking about gadgetry such as scan-o-goggles and remote computer access and force-field generators and so forth, of course. The sort of biotechnology that goes into creating a Ryouko (and, thus, into whatever direct modifications Harry may have undergone, if you go in that direction) is likely to be another story, and remotely powered and run setups - such as whatever it is that does the "create a door to the lab without having to be near the endpoint of the door" bit - might be as well.
While, yes, Washuu could get around that if need be, that doesn't mean that her existing/baseline/default equipment - such as whatever she's likely to have provided Harry with by the time he goes there, unless she's seen (a lesser version of?) the same effect before - is going to be immune to the effect. It could, in fact, be even more susceptible, simply by being so much more finely detailed and precise, unless specially "hardened" somehow. It really all depends, ultimately, on exactly how that anti-technology side effect actually works... and I don't think I've ever seen a good model or explanation of that, in or out of fanfic.
That's talking about gadgetry such as scan-o-goggles and remote computer access and force-field generators and so forth, of course. The sort of biotechnology that goes into creating a Ryouko (and, thus, into whatever direct modifications Harry may have undergone, if you go in that direction) is likely to be another story, and remotely powered and run setups - such as whatever it is that does the "create a door to the lab without having to be near the endpoint of the door" bit - might be as well.