Really fun game, already love Lilly.
I haven't tested if it this is possible yet, but it'd be nice if the relationship could be kept closed but still allowed to have fun with others together, so threesomes+ and swinging yes, but not one partner deciding to have sex with third parties without asking first.
For the sexual content I'm already fairly happy with the first few scenes, especially the cum swap, and am hopeful for more like it, plus a wide variety of choices in the future. The toilet scene already hinted at pegging or if possible perhaps also prosthetic futa content, which I'd love to see realized.
Since the technology is there, some minor transformations seem perfectly feasible. The only limit would be the extra work this creates. While permanent transformations would be awesome, having them for single or a few scenes would already be great.
Sadly the teasing pawjob didn't have an image, but hopefully there will more of it in the future.
In general it would be nice if you put into the genre tag a list of planned kinks and fetishes and perhaps also a list of what will never be added, especially the most controversial ones would make sense here.