The irony was how ages ago everyone was waiting for a browser to come along and unseat IE, which was not a good browser.
Now Chrome works well enough as a browser and has so much market share that it exerts too much control over its users and the Web, and it's unlikely that anything will be capable of obsoleting it in the near future.
I think the trick might be to make a browser that supports a reasonable subset of html/css/js + some killer feature. (Much easier said than done, though: but some kind of mobile app platform like WeChat might be a good way to get a foothold)
Or just fork webkit/blink and aggressively refactor.
The killer feature could be a file type named after the kinds of websites people make. Say .blog or .forum or .store or .social perhaps even .aggregator or .hn (lol) each would work like a straight jacket or like a website on a platform (.blog like blogger, .store like shopify etc) it could be distributed and insanely fast. Every other link just opens in the normal browser.
It's interesting to think about this sort of thing: interactive forms generated from OpenAPI specs? Some way to plug-in handlers for specific mime-types? etc.
This is the dream, honestly. Dynamic form creation from specs. PowerShell has something like it (for a function it will create you a ugly form that you can render), but if you could deliver a OpenAPI spec and have Bootstrap (or whatever) UI on the frontend automatically generated.
The main reason I disliked it was it wasn't standards compliant for the parts it did implement: you couldn't write code to-spec and expect it to work on both IE6 and Firefox, without testing each browser separately.