OP - You are describing something very similar to EC (emergent consensus). It should be important to point out that only certain consensus rules are subject to EC in your proposal, otherwise the miners will be able to make *all* the rules, which is probably not something that is desirable.
right. The 'original' EC was just about blocksize. fees already have an EC to them in a sense.
This thing has gotten so political that something as simple as EC for blocksize is made out to be way more radical than it really is, imo.