IMHO, Unity is in fact well thought for power-users. We like keyboard shortcuts, real-estate for apps, etc. and this thing where in mind on the design. These are some new features we get:

    - New window switcher (Alt+Tab) features application groups (more on this below).
    - New launcher (Meta key) is maybe less usable for newbies, but is faster for keyboard-freak-power-users! remember gnome-do?
    - New real-estate changes (app menu on panel, skinny scroll bars, taskbar on the side...) is maybe less intuitive for newbies, but gives us (power-users) more space to work.

But it seems to be that the power-user community doesn't feel comfortable. My theory (yet to be fully proven, I have to admit) is that we're simply too used to the Gnome2 interface (and others similar) to see the advantages of Unity. In my case, more than not finding the menu or close buttons (solved in seconds), there where some other things that where bothering me, but over time I've been solving them. Some of them follow:

    - New window switcher (Alt+Tab) makes me wait for a group to open:
            Use the arrow keys.
    - Where is the location bar in Nautilus?
            Hit Ctrl+L.
    - Where is the system monitor panel indicator?
            sudo apt-get install indicator-multiload.
    - Indicators display in an ugly order.
            sudo cp /usr/share/indicator-application/ordering-override.keyfile ~/.local/share/indicators/application
            gedit ~/.local/share/indicators/application/ordering-override.keyfile

The thing I find problematic about Unity is that it is buggy. It is buggy enough for me to stop using it. I have Xcfe installed alongside and use it for work (when only doing light stuff I go back to Unity to keep testing it).

I find it somehow understandable because of its age. My conclusion is that its time isn't here yet, but I'm really looking forward 12.04!!