Cool game but I'm concerned with the scale. I don't know how many interactions there are planned but it could quickly get out of hand. Lets consider only Lothar:
(3 different cocks) * (all possible combinations of modifications [bimbo/tits/nipples/futa] = 2^4 = 16) * (10 enemies) * (5 images per scene) = 2400 images
And it grows x2 for each additional transformation. Maybe you should consider limiting some characters to have permanent traits e.g. one is always futa/bimbo, one has huge tits etc.
I don't want to be too picky from the artistic point of view but the fuckable nipples seem weirdly thin and not made out of flesh. I would expect them to be more meaty then stretch when fucked.
Still not enough stripper style 9in+ platforms even in a bimbo game
(and by not enough I mean basically none)
I think I've also found a bug with transformations but I'm not sure how to reproduce. I could for example do tits and nipples on Illonia and then bimbo wouldn't work. Another time I did bimbo first then neither tits nor nipples worked.