Hoopsworld has labeled Portland as a team that may be a good trade partner for the Celtics, as we have young players... which they want! Here's the link: http://www.nba.com/bulls/news/smith_120227.html
Blazers get their PGOTF and a franchise player to go with LMA and another big to play next to Pryz, Camby and Thomas.
Celtics get a budding star in Batum, a starting PG in Felton and a youngin who has showed flash that he could be brilliant.
Swap picks as you suggest, but i think this would workout very well for both sides.