New Roster:
Cousins/Melo
Robinson/Bass
Green/Salmons
Gordon/Crawford/Terry
Rondo/T-Will
Plus the 16th pick (hopefully Schroeder, Larkin, Olnyk or Shabazz) and the 33rd pick (BPA). Move Terry and Bass for whatever you can get.
Trade 1:
Boston in: Cousins, Salmons
Boston out: KG, Sullinger, 2015 LAC pick
LAC in: KG
LAC out: Jordan and 2017 first
SAC in: Jordan, Sullinger, 2015 and 2017 LAC firsts
SAC out: Cousins, Salmons
Trade 2:
Boston in: Gordon, 31st and 33rd picks 2013
Boston out: Pierce, Bradley
CLE in: Pierce
CLE out: 31st and 33rd picks 2013, 16m Trade Exception
NO in: Bradley, 16m Trade exception
NO out: Gordon
Trade 3:
Boston in: Robinson
Boston out: Lee, 33rd pick 2013
MEM in: Lee
MEM out: 5m trade exception
HOU in: 5m trade exception 33rd pick 2013
HOU out: Robinson
Only one I'm not sure about is the SAC trade. They might not want to move Cousins, but he wants a max deal and if they aren't going to give it to him they should trade him. Reports are that his market value is really low so if the new ownership decide to move him this could be enough (replacement big man, promising PF and 2 late firsts).
Pros:
Extremely young (starting five: 27, 24, 26, 22, 23), very athletic, tons of potential. Immediate playoff contenders with room to improve.
Cons:
Unproven, attitude/effort issues, injury concerns (Gordon).
That team would be tons of fun to watch and could cause some serious damage in the playoffs if they can click (I'd say it'd be at least a year of teething problems though). Needs the right coach to manage them though (Cousins, Rondo, Gordon).