I like Vucevic.
Good feet / mobility (very important to me) combined with legitimate height / length at 7 feet with a 7 foot 4.5 inch wingspan. Got pushed around a bit last year but he was only a rookie (not exactly unusual for a rookie big man). He weighed in at 260lbs at the combine so it looks like he'll be able to have some heft in addition to his other good physical attributes.
Vucevic has the early stages of a solid offensive game with a jump-shot out to 17-18 feet. Moves well around the paint and can finish at the rim. Should be a well-skilled role player at center offensively.
His rebounding was good. His defense was poor but good mobility, legit size and possibly strength should help him improve as he gets more experience.
I expect Vucevic to become one of the best backup centers in the league + possibly a starter down the road.
I am very concerned about his playing time heading into next year though with Kwame Brown coming on board. Between Kwame and Hawes, there isn't much playing time left over for Vucevic. He is really going to have a make a big leap to win court time next year.