There won't be alternative protagonists because it would be too much work for me alone (the team is me and my friend that only codes). However, there will be stages/quests where the player is transformed into a girl, futanari or whatever.
Problem is drawing scene variants by myself to replace every scene, there are hundreds of drawings in the game and I'd have to do variants for each of them, or at least a bunch of, for it to work. All that while delaying the rest of the content.
If you enjoy my work but not the subject, on the other hand, I will make more games in the future, likely with futanari/female protagonist :) It's something I really like and I'll love to take my shot at it.