You don't pick Buddy Held without the motive of trading Bradley or Smart.
I can see smart going. He's a better point guard than given credit and a a decent shooter. Plus he's aggressive. If Isaiah wasn't such a good scorer I would rather have smart as pg. as it stands smart is a tweener with the addition of roZier. Making smart more expendable. He could bring in a nice pick or be packaged for a big.
This team is looking at serious contention in 3 years if they draft Heild and Thon maker. A scorer now and a dominant big to develop are two good choices especially if we have no stars coming here. Ainge needs to start thinking now about developing a team long term in addition to adding pieces for now. There's no more quick fixes like 2008 coming our way. Teams are wise to that now and ainge needs to stop living in that fantasy too.