I agree with Granath.
Trading down makes no sense for the Celtics.
Trading picks for established players, sure.
Trading picks to move up and have fewer, better picks, sure.
This isn't the NFL. Trading down can make sense, but not so much for a team that already has way too much OK depth and not enough high level talent.
I understand that LarBrd33 made this post mostly because this fits right in with his role -- saying, "Hey, what if the less exciting, disappointing thing happens, guys? Somebody has to be disappointed, why not us?"
Still, this is a reach. #28 and #34 is not equal to #16, even in a draft with a soft middle like this one.