I could see future soft forks that enable functionality which is both useful for the three things you mention (e.g. vaults, new layer two techniques) AND enable stuff that NFT degens like. That way you get more people to contribute, review and test code. As long as these new things don't degrade the core functionality of course.
(I also don't agree that the current "degradation" is important. The main effect is higher fees, but in the future fees probably need to be even higher to offset the lower subsidy. Any use case that depends on low fees has always been on borrowed time.)