I wouldn't take him at 30; maybe in the 2nd round, but certainly not worth a 1st round pick IMHO.
He was overrated in past season(s) because of Georgetown's success, which did have to do with him. However, the publicity he got lives not up, but down to what kind of player he actually will be in the NBA. He's not fast, and he is not athletic. Therefore, I see him as at his peak as a good, solid backup center. However, he may need several years to become that man, so why waste a pick?