This is my first shot at UIs.
I drew some sketches of a web browser that combines a menu button with the title bar. I placed the menu button beside the MMC (Minimize-Maximize-Close) buttons, puts basic browser controls and extra stuff on the left, placing the tab bar below it.
One thing I noticed about Firefox (4.0 in Windows) and Chrome (basic layout) is that they attempted to compress the menu bar into a button (although in Firefox you can opt for a full menu bar). In the sketch I tried to consolidate the basic functions to further allow bigger webpage screen coverage, I also tried to remove the address bar and search bar.
Would this require a large and long learning curve before being accustomed to it? Here's a link to my sketch.