Goff, Cooper and Higbee were all considered busts after their rookie years and all responded well in year 2.
It is a little early to call small school prospect Everett a mistake. He is only a 2nd rounder and you can look at all the 1st round WR in last years draft that did not produce and I expect some of the will work out next year.
Everett showed flashes and had some injury issues. I think there is a decent chance for him to step up next year and he did show some promise and as a small school player you would expect the transition to take some time.