I actually wouldn't mind if the URL bar was replaced with a breadcrumb bar on some sites, like news and forums. Imagine something like Example.com > Worldnews > 2020 > 06 > 14 > Big aquatic monster spotted outside of Tokyo or forum.example.com > Sport > Football > Spain > Real Madrid It could then work like in Explorer in Windows 10, where you can press one of the breadcrumb separators and see a menu with siblings, o…
I really dislike any attempt to modify strings like this. I find it invariably causes problems in edge cases. What if a site handles slashes differently to how Google expects? Where do GET arguments go? What if I want to modify the URL? Breadcrumbs are great when each part is navigable, but does example.com/worldnews/2020/06 actually lead anywhere, or is it an invalid address for the site? I have absolutely no intere…
However, I think there is something to this idea - a breadcrumb style approach by default in Chrome would encourage developers to use paths in more standard ways that refer to resources, not heavy parameter coupling. As you noted, there are technical barriers to implementing this solution, which might encourage some other good things - servers providing resource discovery so that the browser can understand valid paths when visiting a site.