Lets be real, it was a serious question if he could make the transition from playing low level D1 to the NFL because of his size and lack of actual moves. He was able to blow past people before and he's strong, but his strength isn't where Donald is. Donald did more in college against much stiffer competition and didn't do a helluva lot his first half season, Oliver has a long way to be mentioned in the same breath as Donald. Personally, I wouldn't have taken the risk, just didn't see enough there to justify it, but now, he better learn to rush the passer or he's going to be the next Shaq.
This team has a bad tendancy to fall for elite traits and not looking for football players, its pretty rare those traits work out to be make you great. The one area where McClappy clearly has an eye is DBs, he gets a lot out of lesser physically special players.
I'm not sure how it is, regardless of GM, you see them fall for athletes over and over again, not football players. The only exception I can note is Tre White. Singletary might become that ex exception too, but they had best quit wasting first round picks on projects. Its been a miserable failure and why they still suck today.