Gah this is so irritating. In order to keep my address bar history from becoming hopelessly cluttered with search results I've had to resort to going directly to bing.com, google.com, imdb.com, wikipedia.com, etc. in order to do searches.
Having a seperate search box was so incredibly useful and elegant that this new combination feels so crass, inefficient, and moronic. I can almost get used to the tabs where they are (still hate it) but I absolutely have not been able to adjust to having the search box combined with the address bar. When they first implemented it back in IE 7 it was a thing of beautiful genius. Now, it feels like evolution has reverted on itself and we're going back to user unfriendliness.
While I've been using a combined address/search box for oh... a long time this isn't a problem for me, but I can see why some people might not like it. Try this: go into Manage Addons and disable Bing or whatever from searching from address box, then download the Bing or whatever toolbar. It may not look that great but should be a reasonable workround for now.
I do think they should give the user the option to separate the two boxes and also provide tabs above/below. I'm in the 10% slot that has more than eight tabs open but even if I didn't, at my laptop's native res (1280 x 800) with 8 tabs it can only fit the first 4-6 characters of the page's title and that's after reducing the address bar to show Beyond3D's full url on these forums.
(That's one of the major features I like in Opera: I can customise the UI pretty much the way I want it).