Now the 4 is another matter because Bass and Sully have shown that they can't play together, so if you can turn Bass into a big who can play with Sully, KG, and Wilcox, then the better.
Is the need for an upgrade on Bass or is the need for an upgrade on Wilcox/Collins so that Bass and Sullinger split time at the 4 and you get a big who can play with them when KG is resting?
Given how someone like Greg Smith has turned out for Houston, perhaps another D-Leaguer like Brian Butch or Henry Sims might be as good or better than a minimum salary veteran big.
As I've mentioned previously, I'm high on Wilcox, so I got no problem with Wilcox filling that role. Personally I like Wilcox more than Bass anyways with this roster, though I don't think many agree with me. So if you can turn Bass in to a center, then you can use Wilcox as a 4, where he's at his best, and you can use him alongside KG, alongside Sully, and alongside this new center as situations allow.
Consider, he's only played about 5 minutes total with KG... that's a travesty, they showed the previous year that they can provide some very good defensive units together. And Wilcox has much better hands than Bass, so a better fit for Rondo's passes, and Pierce has a knack for finding him besides the rim. Out of necessity, he's simply had to fill a different role for us this year.
So, I don't see Wilcox as a problem that needs upgrading. He's a valuable player to have because he can fill in as needed at both positions. And we have 2 open roster spots.
And the way we're playing right now, I think he'll provide the boost many are looking for anyways. I'd like to see him rebound better though, but I think he's solid otherwise.