Charlotte needs better players at every position but PG ATM.
Kemba and DJ looks like a good rotation for this year.
SG is pretty blah. Henderson is OK, but would be better suited off the bench, he has no left hand and range only goes to 20 or so (good defender though). The fact that Matt Carroll is the backup here is scary. Him being the 12-13 player is OK, him being in the top 10 is not. Draft Lamb and move Carroll to the end of the bench or cut him.
SF: Maggette is a hard player to like, he is a blackhole, and not a particularly good one either. Derrick Brown is his backup (who?). Draft Barnes/MKG and move Brown to the end of the bench or cut him.
PF: DJ White is a hustle big, not a starter against Bosh/Lebron. Thomas is hurt but his brain just doesn't function well enough to be more than an athletic big. Draft Sullinger/Jones III and move DJ White to the bench
C: Diop is fat. Diaw is also fat but a good player in a contract year. Draft Drummond/Davis and move Diaw to the PF and Diop to the stationary bike next to the bench.
Mullens and Biyombo are projects but could be suitable bench players in the future (ideally Biyombo will progress enough to start). He is more raw than Drummond but has the physical body.
Basically, take Charlotte's starters/players (outside PG) and shift them down a spot or three on the depth chart and you have a pretty good team.
Any of the following would come in and be better players than the current starter (IMO) Barnes, Lamb, Drummond (Diaw to PF), Sullinger (at PF), MKG, Davis, Jones III and probably a few others. Luckily for the Bobcats there are zero good PG's this year to draft so they really can't mess up as long as they have a top 7 draft pick (and all those players come out).
I would love for Charlotte to trade Diaw to a contender for a late first. I don't think they have any other assets to get a good player with unless you can find a buyer for Augustin (not sold on trading him right now, Kemba isnt ready to play 48 minutes and they have no other PG's on the team) Tyrus Thomas or Maggette (good luck).