Oh everything is fine bothways actually. Just keep the game going and I'll like it wherever you take it. At least for me, I don't necessarily need anything other than what the game already has, it's great really.
In my opinion, gender customizable ROs provide variety for people who want a certain character to be a certain gender, while predetermined genders perhaps make it easier to highlight some aspects of the characters' personality, which makes them more...idk, specific? Both has advantages, although I like the second one slightly more.
As for poly routes, I know some people like them very much but I aren't really interested personally. So I'm good whether you have one or not (I probably won't play it XD).