As expected, there are a number of complaints/fears about how non-configurable Unity could be. For these expert users, if they don't like Unity there's always KDE, Gnome or some other UI. I hope the Unity team, for the most part, ignores these power users and optimizes the UI for novices. That would be refreshing to see happen and might result in increased adoption of desktop Linux by the general public. Think Different!
I love that they (like Gnome 3) are doing something awesome with the Linux desktop, but I had to go back to Gnome 2 after a day because focus-follows-mouse is missing and/or broken.<p>(Thanks to the disconnected menu bar business, they seem to be stuck in the same "focus-follows-mouse is impossible" and "multi-monitor sucks forever" hole that OS X fell into. I use both, which makes Unity doubly unusable for me.)