Tensaided, of course, gets to choose (yay nepotism), which meant I had to think about what Tensaided would choose given the options.
(EDIT: Nepotism can refer to family and friends. It's not exclusively giving family preferential treatment)
Now, for some characters, they might choose a form because that's the one that sounds attractive to them (or assumed attractive to others). Tensaided, meanwhile, is someone I've actually come to think of as bisexual, but not particularly lustful, bordering on asexual. He doesn't have Susan's aversion to "things", but he's not terribly motivated by it, either.
So what motivates Tensaided? SHOCKINGLY, nerdy things, and he was just given the opportunity to (sort of) be a minotaur.
Yes. Yes, to that.
(Granted, he might have decided before Catalina mentioned the pony option)