I thought the same thing when I was using the Betas.
At any rate FF's main bar uses to much space for my liking, so I'll probably just stick to Opera. I would like the new FF look if they put the "Firefox" button in the same row as the tabs. I'm still on XP so no transparency, all that blue space looks annoying in my opinion.
Even on Vista/Win 7, all that transparency looks annoying to me as well
I'm running FF4 with the following changes to http://www.mozilla.org/unix/customizing.html#usercss:
#toolbar-menubar {-moz-appearance: -moz-win-browsertabbar-toolbox !important;}#TabsToolbar { background-color: -moz-dialog !important;}