Huh. That is an interesting idea. You could heal the person, but there would probably be some sort of committee that would decide if they could be trusted with morphing power afterward. Perhaps you could draw some blood from the person, pour it onto their hand, have them acquire themselves, then have them morph into themselves and become nohlit.
Something tells me that that wouldn't work. Otherwise, couldn't you just grab one arm with the other and acquire yourself that way?
But, keeping the same idea, though, they could just morph a little way into a morph and then go
nothlit. Sure, they might have a tiny patch of feathers on their left thigh, or a tiny nub of a tail, but surgery could always fix those things.
Ahem, keeping with the original topic, though . . . one thing that just occurred to me is that, why can't the morphing technology have a built-in intelligence of its own? I mean, maybe it has its own 'biological computer' of some sort, with just enough decision-capability to let it decide what features of a person to keep and which to get rid of? So it can get rid of unwanted things like fresh injuries, while keeping needed things like haircuts, clothes, scars, piercings, and tattoos. It could probably do this by tapping into the person's own memories while they morph. I mean, think about how good with computers the Andalites are. They could conceivably create a difference engine like that, that could take memories into account while a person morphs, and then program it into the morphing technology itself.
And this would also answer the question that was raised earlier, about how morphs can have enough food in their stomach to not starve but still not explode when you morph something smaller. The morphing technology is perhaps programmed to 'know' how much food a creature needs, and keeps that amount in its stomach during morphs.