FYI, in IE8, typing "hac" in the url bar sends you to a google search on "hac". In Safari, you end up at http://hac.com.
I still kinda do.
This turns all completion off though, even URL prefix matching (as opposed to the awesomebar 'anywhere in the URL/page title matching'), which I'm guessing you don't want. There are some entries in about:config (browser.urlbar.match*) that might make it do what you want.
Safari 4 does some subset of the super-matching thing too now; I find it kind of a mixed bag (I end up autocompleting to HN/twitter way too often) but am slightly on the side of it being helpful, although more intentional history search would probably work just as well.
As far as I know, there is no official plan to remove the "awesome bar".
Also, I can't until Ubiquity becomes standard. There's a disappointing lack of plugins for it at the moment, and standardization will really help that. :)