It would be nice if the Vista boot screen showed more than just a tiny progress bar. I liked that in XP it showed the XP logo. I actually switched to the "No GUI Boot" option in msconfig to get a nicer looking boot screen in Vista. But, it would be even nicer to see a better quality boot screen. Perhaps the Aurora boot (No GUI Boot) with a progress bar would make it look very nice.
There is no functional benefit of this, but just an aesthetic improvement.