As far as guys likely to get into the HOF today, I'd say Rodgers and Mahomes are cinches, and Lamar and Josh Allen are on the right trajectory. Joe Burrow can't stay healthy, but he's shown that level of ability.
Those QBs are tractors that can pull your team. Guys like say Dak or Cousins are trailers that ultimately need a great team to carry them, because they tend to play to the sum of the parts around them. Giving "tractor" money to a "trailer" QB has been a move that's failed probably 9 times out of 10 in recent years.
I think that the league is at the "pay $60M to Todd Gurley" point right now with QB salaries. Teams are still writing those huge contracts to non-MVP caliber QBs, but they're starting to see more and more of those deals fail. And they're also seeing guys like Brock Purdy and Flacco and Geno show up and be successful while costing almost nothing. Think of those guys as the no-name Alfred Morris types who rush for for 1000 yards. With all of cheap guys that hit, the bargaining power of the rest of the pool erodes.
What we'll start seeing is a QB middle class emerging. It won't be an either/or between resigning your starter for $40M/yr+, even if he's Daniel Jones, or paying $5M/yr to some bridge QB. You can pay $30M to Baker Mayfield instead and build around him.