IMO, if the Celts could pick up a decent big in FA like Gortat or Hawes, and then use Sully as your 6th man, I think this could be a good team.
PG-Rondo
SG-Bradley
SF-Gay
PF-Smoove
C-Gortat
That's in addition to whoever we draft this year, Olynyk, Faverani, etc.
But, to each his own. After how poorly Detroit did this year, I can see why there would be some reluctance on Josh Smith.