I personally would trade Smart in a heartbeat for Noel.
Guards are a dime or a dozen in the NBA and I know I'm in the minority but I don't think Smart is anything special.. this forum definitely tends to put him on a higher pedestal then others outside of the Celtics world tend to. Yes his defense is above average, but as others have mentioned his offensive ability is on the lower end of the spectrum. Also, and what others have failed to mention around here, Smart is having an extremely hard time staying on the court, he missed close to 20 games last season and is on pace to miss many more this season.. not really a promising start for a player that's been in the league for two years. How isn't his durability more of a concern around here?
I don't think Noel has shown his true potential in the NBA, he is on a team that tries to lose, it's been the wild west in Philly since he's been there. I believe if he comes to Boston, he'll regain motivation, and be hungry to show why he was such a coveted player to begin with.. not to mention he'll have to love playing in front of his home crowd.
Having said that I would NEVER give up a Brooklyn pick for him, but Smart and the Mavs pick sure.. or Smart and Sully even better, I highly doubt Sully resigns with us next year anyway. Just my .02, now cut me down ha-ha