You gotta wait it out bro!
In my 5-6 games, the've really all been different. The ONLY thing I'm consistently unhappy with is HUM QBA. @ 5-6 I'm throwing 48% with Weeden. I'm thinking 7-8 might be the value that brings him up to 52-55%, which I'd be happy with.
Of course, we're also having major drop problems. At least one receiver per game has 3 drops on his own.
Everything else is awesome. Scores, yards, competitive run and passing game. I hope the patch doesn't screw this up!