Being generous, maybe half of users can look at a URL and immediately identify the domain they are on. That's terrible, and goes a long way to explaining why phishing attacks are so prevalent.
I'm actually pretty excited to see what they come up with. If it's even marginally better than what we have now I'd be all for it. I'm guessing they'll end up showing some combination of the domain and page title by default (which might incentivize more sites to FIX THEIR GODDAM TITLE SCHEMES!).