I jest, but my best hope for a stagnant market is competition on merits that we really want, and less so for the whizz-bang features that attract attention without improving our lives.
I've got a used Nexus 6P with a dying battery. I don't know of any improvements in newer phones I need (except security updates!) but I'm torn whether I want to learn how to replace the battery and risk damage, or shell out some bucks for a local repair shop to do it.
Let new phones come out that are "as good as" the current phones, but reintroduce features we had to "give up" to get them this good. Batteries, useful I/O ports, comfortable shapes to fit our faces...