I really do think we are, but also some lineup changes would have to come with that. Both are unlikely.
Bigs ranking in salary, reputation, & playing time:
KG
JO
Bass
Wilcox
My opinion of bigs rankings by talent, which should drive minutes right now:
KG
Wilcox
JO
Bass
Without bringing in anyone:
Moving JO to his natural role of backup C would probably help JO.
Moving Wilcox to start with Rondo will help the running game and set the tone on the glass/inside.
Bass, the smallest and weakest around the glass, should be the 4th big and get 4th big minutes.
The problem that remains is that if Wilcox is your starting center, you're not a contender. If he's the 3rd big in the rotation, It think we have a chance.
So we're 1 piece away in the big rotation.
On the wing, I think we're set on personnel. I love a Ray/Paul/Pietrus rotation, but with Pietrus starting and Ray off the bench in a 3-player main rotation. Quisy and Pavolovic are excellent, excellent deep bench players that can step in to big games and play, IMO. So I think Doc needs to make a lineup adjustment, but we don't need anybody on the wing.
At PG, Rondo takes the minutes, and that's fine. Bradley, Dooling, and Moore make an adequate backup platoon. No new players needed; need to pick a guy and go with him. Currently, it seems that's between Dooling and Bradley, and Bradley might be winning out. If he appears consistent enough for playoff minutes, Dooling will be 3rd string, and probably on the outs.
So yeah, I really, truly believe we're only one piece away: a starting center that can move everyone else to the appropriate role for their present ability.
These little lineup suggestions would bump a few players out of the rotation that could get minutes elsewhere, namely Dooling and Bass (possibly JO). These become the players to shop. Seriously, some team might benefit from having this lineup on their bench:
Dooling
Quisy
Sasha
Bass
JO
I'm still looking for a Dooling/Bass/Clipper's pick trade to happen at the deadline to try to straighten out the ship.