(3) No, I'm pretty sure users want more knobs or at least filter options. Hell, even a simple domain blacklist feature would be amazing so that I could get the woowoo psuedo science cruft -- which has been SEO'd to the front page -- out of my results, so I didn't have to put any mental effort into visually filtering out multiples from the same site. Hell, they could even collate results from the same domain into a single grid folder to optimize the time I spend searching through the search results.
Don't conflate Google's lack of innovation for an optimized experience simply because it's Google. I love Google, but there is a massive amount of improvement that can go into their search user interface. Same for every other search engine, but Google is the leader in this space, so they get the brunt of the criticism, and should they change, then others can follow suit.