Well, I played the entire first playthrough because they talked so much about choice and consequence. Turns out I resisted for nothing, but, if they add in some actual consequence etc loosing your sense of self, you have to do checks to resist eating brains and so on. Then this can at least be mediated somehow.
Regarding your Wish example, there is a really easy fix for this. Just.. dont include Wish? It is not like they have implemented EVERY feat, class and spell from DnD lvl 1-12 anyway.
They can totally include Wish. Other games have included Wish. As I said, Wish, in 5e, has a very powerful "standard" use but one that would not necessarily completely break a computer game: Use it to cast any spell up to 8th level, from any spell list (so for example, a wizard could use it to cast a cleric spell), upcasted to 8th level. That would be plenty powerful. "Wish" also has, in tabletop, basically a non-standard "creative" power that is basically "Wish for anything, and DMs use your judgement." THAT couldn't be implemented. But you could totally give a list of very powerful, one-time options that you could "wish" for (think of what they do with divine intervention). The "creative" use of wish is also balanced by the fact that every time you use it, you have a 1 in 3 chance of never being able to cast wish again.
