>I've tried to get used to it but have been unable to. One major disadvantage is that UT now relies on a wide screen (half the menu is just not available to me at the moment - it disappears off the right edge of the screen).
>I know I can switch off the options, but then I lose functionality.

What you are not seeing at the right is something that wasn't there before.

>I find it clumsy because I now have to hold my mouse over one of the tiny wee icons to find out what it does before I click on it.

You don't have to hold. The browser status bar refresh immediately what the icon does.