I can't tell you what other's expect from him before they will start believing in him. I think for some, they will never be able to overcome his size. I think that is the fundemental problem for them which means they will never be happy with him behind center. For others, it seems he will have to be in the top 10% in pretty much every catagory and do that all seaon for them to start believing in him. Not everyone of course. There are people on this board that, while have doubts, can still acknowledge his good plays and are willing to give him another season. Those folks I would assume just want consistency - and wins.
I could be off on all the above but that's kind of how I see it.
And while you didn't ask, I will say I'm glad they picked up his 5th year option. He earned it. I do not think he should be signed to a long term contract yet. I do think he will develope in a franchise QB and will get the Panthers back into the playoffs and win them but I know I could be wrong. Next year will be the big test. If the offense continues to improve and they get back to the playoffs because of the offense, it will be time to sign him long term. If it's a repeat of this year, then it's time to look elsewhere for a QB. Like I said though, I believe he can be the guy so would be surprised if he doesn't make it.