Here are my answers before I sleep.

[hider]
Q: Would people like to be able to create unique histories and their own lore (royal families, factions, races) at some point in the RP?
A: I think if we're going to be playing in an AU, it would only be fitting to have our own history and lore.

Q: Would people like to have the chance to lead their own Arcs later in the RP?
A: That depends on the strength of the writer I suppose, I myself wouldn't mind the opportunity.

Q: As Bleach is a verse centered around conflict between factions and inviduals, it stands to reason that an RP based on it will also be as such. The question is, what races do people prefer to be playable? Shinigami, Arrancar, Quincy, Spiritually Aware Humans, etc etc.
A: From a personal standpoint, I'm quite against lots of playable races in a Bleach RP. Things tend to get quite messy and balance inevitably shifts between races that often causes' chaos. (See Bleach: Platinum Hearts) 

Q: Would people prefer the story's villain faction to be playable, or ought they be controlled by the GMs entirely--or is a middle ground best?
A: Blackbeard was recently going to start an RP where the GM/Co-Gm played the villain faction only, which I found interesting. Despite that, I believe a middle ground is needed to allow for personal rivalries to be able to be developed by the players, amongst other things.

Q: Should there be a limit to how many characters a player can make?
A: I would say yes but only as a personal choice.[/hider]