So, with minor edits (need to 'de-web' the first two fingers on the right hand, easy peasy in Photoshop), this looks totally usable as an SU asset. My question is, how hard is it to change up the poses, and more importantly make sex scene images using this method?
It'd be cool if a 'production pipeline' could be set up where the AI art types create new sets of sprites, and maybe also additional sprites for existing characters, and then someone else works on incorporating those into scenes. That's been my motivation from the start, i.e. re-building the 'sandbox' in Ren'Py so that others can do exactly this (add new content).
ControlNet would help with the poses, but combining two characters into one scene is probably best left to be done manually in-game (much as SU already does).
The big issue with AI is the lack of consistency for a character - what people don't see is the failures. All they see are the cherry-picked images and even those often require a little tweaking.
Outfits will vary between poses, details will vary between poses, hair will vary, suddenly the character looks a bit like a squirrel, where did that Cocker Spaniel come from, etc...
Riches beyond the dream of avarice* are there for the first dev to use AI to consistently generate high quality images of a set of characters and incorporate them into a porn game. Within a couple of years of that it will become like DAZ-created VNs: "Oh God, another one..."
*Or at least Summertime Saga levels of Patreon cash.