How much will it benefit our edge rushers, that offensive tackles don't have the high ground in being able to push them past the pocket?
I think this is significant, particularly for weakside end. While these details vary a lot from snap to snap, one of the goals of four downline scheme where the defensive lineman focus on one gap is to make it hard to double team the weakside end and the weakside tackle (the 3-technique in silly jargon). This means Sheldon Richardson and Michael Bennet (or Frank Clark) one-on-one with both men powerful enough and quick enough to have a lot of success running stunts and twists.
As an aside, both Michael Bennett and Sheldon Richardson were top five in the NFL for run stops (tackles at or behind the line of scrimage).
I wish that we could see Russell Wilson, just for a few GAMES, play behind Dallas' offensive line.
I think Russell Wilson is significantly underrated and the offensive line has been a weakness for years, but the Seahawks offense is designed to make it hard on the offensive line to pass protect. The Seahawks emphasize run blocking and long developing (down field) passing and Russell has a propensity to hold on to the ball hoping for the big play. The easiest way to make your line look good is to get rid of the ball. I think Russell has gotten to the point where his judgement about when to make the easy play versus when to go for the jugular has improved to the point, where he will start making the job for the offensive line easier.