From a personnel standpoint, we look good. WRs need be good after the catch, which Dez and Miles both excel at (if healthy). TE is more of a possession guy, which Witten obviously is. QB needs to be mobile (which Romo is) but also accurate on short routes and making decisions quickly (which Romo could be better at). OL obviously needs help regardless of what system we run.
I wonder what it means for Felix, though. WCO utilizes a lot of pass catching backs, either split out or out of the backfield. Not that he'd be a top option, I just always thought we should utilize him more like that.