I think a tab dedicated to character sheets in a role-play would be cool. That way they're easily accessible by all, useful when the role-play has like ten billion ooc posts and not all the sheets are on the same page. 
Further, I was thinking, if this happened, the admin could set permissions. Like, if it's free for all, anyone can submit a character profile and bam. If it's more controlled (especially in advanced), anyone can submit a character profile, but the gms have the option of approving or rejecting it (providing a reason if so). 

Also, it would be nice if gms could edit other's posts in their own role-play. At least, if the rp had multiple gms, each one should be able to edit the opening post, to keep things updated more quickly and such. 

Sorry if this has already been mentioned.