I live in Raider country and follow them a bit - their line is nowhere near as poor as people make it out to be. They played terribly last year -- but that coaching staff was just totally out of it -- the OC had been out of the league forever and Shell clearly lost whatever he used to have.
There is talent on that line. Gallery's first two years were decent -- but last year he, like everyone else on that team, sucked. Jake Grove is decent. Barry Sims is too and they've got the other, more developed McQuistan at G.
Are they going to be great? No. But they aren't going to suck like last year.