That works for me, both the plot and character limit. I do think we should only allow players whom prove consistently active to play more than three characters though. So that if they vanish, we don't have to kill or redistribute a quarter of our cast or something similar.

Edit: I say both Grimm. In the last bleach rp I did, the Crew, GM and Co-Gms were the only ones allowed to fill the seats at the start. The rest were NPCs until a member of the cast had their PC earn the spot via their actions ic and the player's contribution to the RP. It worked out pretty good, seeing as the Crew used the positions to keep things focused IC, and the cast all tried to contribute to get their Lts or lower ranked characters promoted to the spot.

(Then RPG crashed :( )