Don't forget an obfuscation layer to spoof things like canvas fingerprinting, installed fonts, etc. I'd pay for that.

Sure, I just want the core browser stuff and plugins, security/privacy kinda goes with that.

It feels like browsers are like old IDEs where everything is bundled in. I think it would be much better it they were more like modern code editors where people can make their own custom IDE by installing the plugins they want.