year 1 he was way better than I expected. Given his lack of PT in college and where he played NFL caliber WR's always open, I thought he was much better than I figured. year 2 he was better than I expected largely because he was so much better as a runner, and far fewer run backwards into big sacks. Year 3 first half was great, much better than I figured, 2nd half, bad, worse than I expected.
So where he left off in year 3 yes below my expectations, but overall he's turned out to be a much better player than I figured he'd be at this point.
But he has to take that next step and I agree it's going to be about learning the nuances of the position. When you watch Warner break down tape and he starts explaining stuff you realize how complicated it is. When you see games in person with an overhead view you say man that guy is wide open but then when you see it from the angle the QB is seeing it you realize he has to throw over this guy and keep it away from that guy.
Guys like Brady and Rodgers make it look so easy