Is there a planned update to allow players to replace the futa content with strap-on content?
Viewing post in BattleMaidens: Break Duel comments
It's not currently planned, but I won't rule it out completely.
At the moment, the futa content is designed around the characters themselves, so replacing it with strap-on content would require more than just a simple toggle. Still, I'll keep the idea in mind as a possible option for future content.