If you're going to split it out, profiles that is, put it in its' own module (or write it into the "Carbonite" module). Likewise put "Profiles" on its' own page. That way there is no confusion. "Hey, this is a "Profile" for your character! You can make one for each of your characters or leave it on "Default". The choice is yours to make." I don't know, I guess I've been wrecked by all of the addons with profiles already. Hopefully it won't be too time consuming to do.
Good Luck!
EDIT: I remember you saying that the old Carbonite had a massive "SavedVariables" file, and one of the reasons for that was the profiles. Just a thought, here: Why don't you make them save per character - in the characters "SavedVariables" folder? Or would that be too much of a P.I.T.A.
/EDIT