well there's gopher or gemini, but I was thinking it should have some more modern features.

Like if you took all the features of all the best modern websites and apps, and condense them down into a fully integrated stack replacing everything from http up. Only allowing elements that don't get in the way of UX.

Ideally it should completely preserve privacy and anonymity, so perhaps bolt something on like I2P. Make it pretty much impossible to track people beyond them voluntarily giving their information or doxxing themselves.

But then also have 99% of the conveniences of the best of modern web/app design. But beyond those fixed functions, you have zero freedom as a webdeveloper.

Fixing the content of the websites is then another problem entirely seperately. This is just to fix UI/UX.

Like if a zoomer designed gopher.

Together with more effective search engines, whose actual goal it is to bring quality content to users, you could fix the web forever. I think if you handed control over page rankings over to users, you could fix search engines too. You have to create incentive structures to align the interests of the search provider with that of the users. Currently Google has little incentive to actually provide you good search results, that doesn't neacessarily make them money.