The one thing, and this might have changed, that really annoys me with Gnome, is that the network manager panel applet, doesn't seem to have an equivalent in the menu system. That's the thing that lists your wireless networks etc.

Although I don't use the menu's that often, and I hate digging down into menus - I find they are really useful for reminding myself quickly which programs I have installed. I only really noticed this when I tried out Unity. I had no feeling of what was installed or what was not. For example I went to install transmission - and then found it was already there after I had dug through to the software center. That feels really wrong.