Well clearly C's aren't contenders but that doesn't mean they can't be playing better basketball. I think the bench needs stability and that means I'd move Crowder to the bench but in a Ginobli type quick sub. Also start playing Brown at SG off the bench. Brown is such a force at the 2. No more putting Smart at the 3, please. If you want Smart to guard a three on a switch that is fine but no small ball. Also I think Green's play would be bumped up. Playing with the starters means more open looks.
I'd like to see on average
PG- IT 34 mins, Smart 14 mins.
SG-AB 30 mins, Smart 10 mins, Brown 8 mins.
SF-Green 12 mins, Crowder 28 mins, Brown 8 mins.
PF-AJ 12 mins, Horford 14 mins, JJ 12 mins.
C- Horford 16 mins, KO 12 mins, Zeller 10 mins.
Hope C's try something like this before the trade deadline to at least see the group in different roles before attempting any trades. Sometimes the best trade is no trade.