Well, let me tell you a quick story. At first I was planning on giving ALL characters the option to be futa, one of the reasons I chose the Naruto/Boruto world was the Transformation Technique! Then I started making the game and realized the insane amount of work that would take. Especially for the main duo (Hinata/Himawari). So I'll definitively try making side characters have some option to turn Futa (Like Tenten in this last update). But can't promise or prioritize it now. I'm really trying to make this a full game, so I can always come back later and add futa for everyone then.
Loving this game, imo it's a better story than House of Shinobi with better character design too. Id love to know a time line for the next update and what you want to include. Also I'm interested to help you work on this as a passion project. Maybe get some content out faster idk. I guess I just can't wait for more!