It is a travesty of roster management that we entered the season with completely unproven commodities at forward.
I think that given what we've seen in the first 1/4 of the season, Bell / Benny should cede minutes to Taylor / Brown. I'd prefer to see Brown get a crack over Ajak.
But let minutes distribution be a game-by-game decision -- if Benny brings it any given game, he gets the bulk of the minutes. If Bell hits a couple of shots, give him extended PT to ride the hot hand. But I believe the pattern we've begun to see from JB is that both of the starters are now on extremely short leashes, and if he doesn't like what he sees, he's not afraid to pull them.