clearly melo has more talent and skills than perk did as a rookie, by far. so waiting and keeping melo as the 15th man is not a huge investment to make. it worked once before.
i did not like melo in college since he only played zone and i am not convinced yet he can be a good nba center, but he might be since he has shown flashes of talent. and since decent centers are like hens' teeth, he is a good lottery ticket for the celtics to have.
my biggest concern from watching melo is that he seems to lack a real desire to grab rebounds. i can forgive that he is new to basketball. fine. but what bothered me was watching him wait for rebounds to fall to him. rarely did he push anyone out of the way and fight for a rebound. almost never did he go out of his way to get a rebound.
i am hoping this part can be taught to him...fighting for rebounds with passion. it's possible for him to learn. i have already seen that he learned to box out better.
melo has talent. he now needs to develop a mean streak similar to rodman or barkley or bird. that is, he has to think that each and every rebound is his and his alone. and be willing to fight like hell for it.
if he can develop that attitude he can rebound credibly. combine that with his slowly improving offensive game and his already excellent shot blocking and he have a credible nba center.
he is worth the gamble.