My mom has 64" 4k TV with excellent image quality, but very often (right now, for example) she watches YouTube on her old CoreDuo PC with 24" screen, in small window. I don't know why.
My search bar shows me my past searches, instead of random suggestions, while my URL bar shows my past URL's, which saves tons of time for me when I need to find a past site or a past search. Also, I can quickly select another specialized search engine for a search.
I general, general people needs something simple, while a professional needs something powerful.
Chrome's unified bar currently supports that. Type a fragment of a site name and hit tab... If the site published a standard search mapping in its metadata, the bar changes modes to direct a search query to the specified website. Super useful for GitHub.
I can tell you're being facetious, but you actually just described "television," and you should see the numbers on how many people buy cable instead of cutting the cord and subscribing to a handful of streaming services for half the price specifically because (and they do surveys on this stuff) "I just want it to work; I don't want to search for something to watch, I want to turn it on, it's already playing something, and I just put it in the background."
> we will able to use a browser with separate URL and search bars, which is good for work performance
Maybe I just don't do the kind of work where it's mattered, but the fact that my URL bar also accepts keywords and auto-directs them to a search engine has never impacted my work performance (perhaps because I use bookmarks for anything I need to get to frequently, bypassing the URL bar entirely).