Ok, so of those x-men mutant apocalypse does not do that at all. At least not that I can remember It has been a while so forgive me if my memory does not serve me correctly on that one but I'm pretty sure it does not. I see what you mean with the others though. Also there's x-men the clone wars that I believe doesn't do the up and down thing.
And I don't think you need to make it more clear by the way with the multiple enemy swallow. I could tell quite easily that I had multiple prey. Just a way for the game to know you did by either making the tummy account for it and or with life regen that shows it which you already said you were gonna do.