They pass block great ..that is simple man scheme that allow them to play fast and assert themselves.
The whole run scheme is way to complex for them ..they are stopping and thinking instead of playing
Plus many of the formations telegraph their intent to run . If everybody in the stadium has an idea when they are gonna run ...you better believe the D on the field and the DCs know they are about to run. No fair to just blame the O linemen..seems to be a schematic issue
Many of their run plays take way too much time to develope in the backfield . Seems some standard between the tackle running and dive plays would be a better answer here .
None of the running backs are committed at the point of attack. If it was just one back I would say it was his fault ..but since it is all of them ...I would guess it is a coaching issue.
When you look at how a bunch of guys who could not tie their shoes under Sanders turned into a productive offense when Cut returned , or you see how a but of bozos running the Claw-fence responded when Kiffen inserted a simple zone blocking techique and some straight forward plays , you can draw a parallel here.
They need to make this offense less complex , disguise their play calling , and use quick hitting power runs and high percentage drive sustaining passes ( bubbles , screens ,waggles , ins , outs , slants ) while mixing in downfield attacks when the defense is not expecting it ( 2nd and 2 )
When they master that ..they need to then bring in multiple formations , pre-snap movement , and the exotic things .