The ONLY trade I would do would be:
Bass,Bradley and future 1sts for Josh Smith
That's fair to both sides in my opinion.
ATL gets a stud at SG and young dependable PF to play next to Horford
Plus draft picks
Boston gets a player that would immediately start at PF next to KG and be a constant alleyoop threat and weak side defender.
A future of Rondo,Lee,Green,Smith, and Sully could be competitive