I am not a Boller believer. He is still inaccurate, and he still makes hasty, rash decisions when throwing the ball. Granted he's young, but I just don't see him improving that much more. Personally, I think it was the receivers who stepped up their game last season, not Boller. He may have taken steps to being a better QB, but I wouldn't call them strides.
Will the passing attack be improved in Baltimore? Certainly... I can't really see how it can't be. Better o-line, better receivers... anyone can improve under favorable positions. But I don't see Boller ever being worth the 1st rounder they spent on him. He seems to be, when he is learnt up and matured, to be the perennial 13-18th QB, give or take a couple.
I could always be wrong about Boller... God knows my judgement hasn't been spectacular in talent evaluation in years past (I'm still waiting for a Tim Couch comeback... just watch). But, this is the way I see it.
'Cause I'm Cow ... Boy ... for life.