I had never heard of this before, even in my decades long interaction with the internet and it's interesting depths.
Futa! I has heard of trans women of course, but never this. It's incredibly interesting to me, them being born like that, being enormously hung and sexually aggressive but also still very much feminine.
I'd like to try role playing with a partner who wants to play one of these futas! Almost no restrictions on who you'd like my character to be. The question becomes this: if you were a beautiful woman with a massive boner, who would you want to hump into a puddle of orgasming uselessness?