It is great to hear you are excited. Hoping you are right and we get some good football.
I do bet you are wrong about the model being unsustainable. It feels more like it was purposely designed that way.
If you have a great QB, you slowly have to lose pieces of your team to compete with - just to pay that QB. That assures that eventually the advantage you have with a great QB is offset by the lesser roster. This assures another team with a good/great QB can leapfrog you and that drives another team/franchise into the winning circle. However, as your QB stays in contract the relative % of the cap taken becomes less and you get a chance once every 3-4 years to make a run.
In the meantime, teams with new QBs get chances - and that replenishes the 'star pool'. It also creates a new set of fans in whatever city that is, to drive new merch sales and marketing opportunities.
Teams use QBs as the face of a franchise for a reason. They are more important than coaches right now.
That seems more by design and likely to continue, if not accelerate, vs tail off. The NFL wants to make it easy for teams to make investments, be more marketable, and constantly put new blood in the playoffs - focusing on the QBs does this.
We reaped the benefits of this system when we had a great QB and now we will be forced to the other side of the road because the lack of same moving forward.
But for the health and financial success of the NFL, the system seems well designed and appears to work as intended.