Paintrain:
Obviously the playcalling and the level of agression in the offense this year will be important. I surely don't want to see the Redskins try to make their mark in the league by running a half-dozen "gadget plays" every game. But I wouldn't mind an offense that tried one or two of them at really unexpected times - and down and distance situations - in a game or two.
Of all the players who look to have the potential to be a "game-changer" of the ilk of the players you mentioned, I think Landry is head and shoulders above everyone else on the squad. That doesn't mean I think he's a lock to achieve the status you described but I think he's the man to do it if anyone is to do it.
It will be good to see Campbell throw 25-30 TDs in a season - whether that is this year or next. I think the key is that his TD/INT ratio has to be high. 25 TDs is great; if they come along with 25 INTs, that's not so great.
So I think it's important for Campbell to throw two-and-a-half times as many TDs as INTs. 20TDs and only 8 INTs may not be the best year in the history of football, but it ain't bad either. Of course, 35 TDs and 14 INTs would be better...