PTGames
I don't know if you're interested in doing it, but how about adding the option with Phoenix to ask her to keep you transformed until you ask to be transformed back, add a one-time introductory scene just like the first time Phoenix can fuck you as a girl though, with the MC or Phoenix asking about it, and a repeatable one for the other times, so it would work better in the story, of course that means no progression with the main characters until you transform back, but adding a bunch of side content while transformed, including side content with the main girls, you can even have her ask whether you want to be fertile or not, potentially leading to getting impregnated by futas, and having the one that knocked you up having their own ending with it, or if you get impregnated by one of them having it be an accelerated pregnancy like Vee's, adding an option in your bedroom to advance to the next stage of the pregnancy and have pregnant content that way, and transforming back just removes the pregnancy, removing the memories of the pregnancy from the one that knocked you up, yet having the option in your bedroom to give birth after getting to the final stage of the pregnancy, which would activate the ending of the character that knocked you up (which could be anyone, with the help of magic giving them a dick), this way all of that content would be repeatable too, it would also require being able to visit side girls like Sam at will too though.
It would be a lot of work for sure, but this way it wouldn't make you add too many variables as you won't be to advance the main story while transformed, which you could still add as an alternate progression line at some point, that one being a permanent transformation to make that one easier to code.
I would also like some more body swap content, both ones in the scene only, and longer duration ones that would follow the same rule of not advancing the story while swapped, maybe making permanently body swapped endings for each of the girls too at some point.
This post ended up longer than I thought, I just wanted to make sure I mentioned everything that would make it easier to add, although it would still be a lot of work to write all that content.