McVay has tried to become more multiple the last couple years and is now succeeding. He can now pivot to empty, shotgun, zone, power, bunch, spread, 22, 12, and whatever else his beautiful mind wants to create because the OLine has repped every combination for awhile now. That flexibility means the team can go each week with completely different styles. Furthermore, Stafford is just starting to get a feel for it. We've played defenses that used to give us trouble and dominated them.
So much of the success going forward is predicated on health. If these players are available all year, I don't expect any letdown. But that's a tall order for 20 games in the NFL.