I've met / seen a dozen or more trans ppl in RL so far and I can safely say their personalities are completely random just like any other gender. I know 2 that are horrible human beings, 3 annoying slutty ones that are desperate to recruit as many straight ppl as possible so they can fuck them (and refuse to accept no for an answer), and many closeted ones that are friendly and normal in the sense that you wouldn't really sense anything different about them unless you looked more closely.
This being an AVN, of course the most appealing trans person will make an appearance in the game (or what we think is the most appealing). Would you really want to see a feminazi trans in the game, or a slutty trans that forces you into doing things you're not comfortable with, etc?