Oh, hey! I think it would be quite interesting to imagine what if Trunks had been female (apart from really hot) or if Bra would have been born instead of him, but I guess a change like that would also imply some personality differences that could have been awesome to see in action.
Well, I have to admit that I never considered the romance between Mirai Bra and Gohan. Maybe it would be racier and better than my current OTP! I really don’t know, and I think I can’t really imagine it as well as you or anyone else (I’m not very imaginative). I’m not strict about my ship at all, and very interested about all Mirai theories, ships and the such.
If you want to, do send me the fanfic you mentioned through my submit box (either the text or the link if it’s hosted somewhere), if you don’t mind.
Also I laughed when I read ‘Bulma the cougar mechanic’! I like that nickname for her, actually.