A KG/Horford frontcourt would be difficult for opponents to deal with and a dream for us.
Sadly, dreams don't often come true.
The only real incentive for the Hawks to do this would be having Rondo as an enticement for JSmoove to stay.
I would throw in Sully to do this, as much as I would hate to part with him. If you ever had a chance to get Horford, you gotta do it.
Still think Hawks don't bite, though.