It should be pointed out that the Charlotte coaching staff has made it abundantly clear that Marvin Williams will be the starting PF this coming season due to his ability to spread the floor with his 3pt shooting, allowing Al Jefferson to go one on one in the paint. Zeller and Vonleh will be brought along slowly, so this team won't be relying on as many young players as you think.
Last season they finished 7th in the east with two starting wings who couldn't shoot, Henderson and MKG. Stephenson is a HUGE upgrade over Henderson in almost every way. They drafted a knockdown shooter in PJ Hairston. So Henderson may be on his way out of town. Meanwhile MKG has spent all summer working with Mark Price to breakdown and rework his shooting stroke. Gary Neal is also still on the roster. So expect improved shooting from the Hornets next year.
I wouldn't be surprised to see Henderson traded for a backup center. With Stephenson, Neal,and Hairston, they don't need a SG who sucks from 3 pt range. Plus the fans in Charlotte had some college related reasons they never warmed to Henderson.