Is the running game overrated as part of the modern NFL?

My thought for a few years now has been that if a team goes hard for an old school power run offense they will have great success right now. Of course they would need a run oriented O line as well as a versatile power back.

My reasoning is that as defenses are built to defend the passing attack they are forced to put more emphasis a DB, and somewhat smaller LB that can cover more ground. DE and OLB are pass rush specialist. A big run oriented OL and RB should be able to power through the "smaller" defenders and wear them down with a bruising attack.

Another advantage would be that the first team that makes this switch back to the run would have a much bigger pool of top talent for those skill players because teams right now are looking for more versatile OL for pass protection and RB with more speed and pass catching skills.

3 yards and a cloud of rubber pellets would be good to see right now.

I think thats why Seattle had such success recently. The power run with Lynch was tearing through defenses. Even the 49ers defense couldn't fully stop it.