I think the consistency will come with time.
The thing a lot forget about Bickel is that he was acquired in a throw-away trade for a sack of **** (aka Nigel Williams). An undrafted guy. The only thing Ducks posters could tell us about him was that his nickname was Stewed Pickle. He forced his way into big minutes with Hartford and when given a shot with the Rangers, he made the best of it and kept that spot. He's a guy that has been continually improving his game, and with more experience there's no reason that can't continue.
Who had Bickel on their radar prior to last season? Anyone that claims they did is a liar. I'm by no means claiming that Bickel is going to be the next Girardi--to the contrary, I think he maxes out as a bottom pair guy. But he does seem to be one of those guys that you can't write off, a player that will continually improve until he has developed a little niche for himself leading to a good NHL career.