I'm not into human futanari stuff (it's weird for me to see perfectly lovely human girls in every sense of the word with a penis slapped on...), but I feel no such aversion when the futas are fictional creatures that are "meant" to be that way, and in fact I have a genderless original species I'm quite attached to. When I read further and saw your interest in future/space fantasy, I got really excited! Would you be interested in hearing about my herm species and their sci-fi world? I'd be sooo excited to finally share them with someone.
And if they aren't your style, I'd be more than happy to work with an idea of yours or collaborate on something new. Either way, let me know if you're interested, and I'll PM you!