re: slow erosion of the lines under Miles

I think you are right. The offensive line looks a little slow off the ball and often seems to not know who to block (some plays guys don't hit anyone, other times defenders run right by them), which all seems to fit with a change in the scheme from last year. If it is a scheme problem, it will correct itself with time. Personally, I am a little concerned with the play at center, as they seem to be missing assignments more than the other guys, although that may be just that some of their misses are really bad looking.