Good question. I think, ultimately, it comes down to whether there is a quarterback that can pick up on the nuances of the West Coast Offense, make quick, correct decisions, and execute. The second most important factor is whether we now have the receivers to run the West Coast offense.
I don't see the line as a problem - I don't see the folks we have, and especially the ones just recruited, as being limited to just being able to run block. Between spring and two-a-days, I think they will pick up the techniques - and they appear to have the physical ability. While there will be breakdowns and sacks, that happens to any offense.
Will the play calling be more diverse and unpredictable? Of course - it can't be anything but, given the nature of the West Coast offense verses the option. But can it be executed? That's the question - and paramount to answering it will be the ability of whomever is the starting quarterback. I'm not even talking so much about physical abilities as I am the ability to quickly read a defense, know where the open man will be, and deliver the ball quickly.