Hmm.
10d solves for me as a nice normal clue whose answer fits in the grid, but the first word of the clue doesn’t seem to contribute: so maybe the first word “has been treated” in one of the two ways and reversing that would complete the clue — eg if the original word were “Scottish” rather than “Wish”...?
31d solves ok for me to a 7-letter word that needs to go into a 5-letter grid slot, so presumably it’s one of the answers that needs to be thematically altered.
I’m flailing too at the moment: I need to solve more to figure out what’s happening, but this one is proving slow on the cold solving. Maybe I’ll do better in the morning...