I can't imagine coaching both Stromile Smith and Sean Williams on the same team. At least you can run the same "no plays for the PF" offense with both the first and the second team.
And to think that the Cs were thinking about Marcus Williams instead of Rondo two three drafts ago. Good think RR destroyed him in those one on one battles in front of Ainge.
How about BBD, a signed JR Giddens, and a second for Sean Williams? BBD gives them some needed bulk, and Giddens a RJ type at 1/12th the price. Since they have a similar player in Smith already, it might be a smart move. Between Josh Boone, Ryan Anderson, a resigned Nenad Krstic, Smith, Yi, Brook Lopes, and Sean W, they have way too many bigs. BBD is a different kind of player than these guys, and has a big upside if he can get in great shape.
Sean Williams could really thrive in the right situation, like with the Cs, but on a young team stocked with players at his position, he could be a huge problem.