There's nothing "PR" about mentioning Seattle. Monte Kiffin was the mentor and biggest influence to both Gus Bradley and Pete Carroll. They also employed a lot of 3-4 elements into their defense at Seattle, which would make sense for the Cowboys to emmulate since they're transitioning from a 3-4 and have been drafting players to fit into a 3-4 for the last 7 years.
Also, if they are looking to emmulate more of what Gus Bradley did in Seattle, I wouldn't get too caught up on projecting who goes where. Seattle used a ton of different looks and a ton of different sub packages, and a lot of role players who played 12-15 snaps per game along the front 7 depending on a specific role in a specific package. Do you want Rob Callaway playing 60 snaps a game for you as an everydown 5 Tech? No. Could he play 12-15 snaps for you in a specific package as a 5-Tech? Probably. I think mainly what you look for in the front 7 are versatile players who can do a lot of different things, which is why guys like Sheldon Richardson and Shariff Floyd make sense in the first round given that they played multiple techs and positions in college.
Despite labeling myself a "realist", no one understands my pain or appreciates my special truth. Stupid world.