Unity was alright, but it lacked the level of customization that Linux is known for so i switched to KDE. it also played up with my games. the 'unity bar' up top that acts like a system tray/menu bar always stayed on top and could not be moved, cutting off important info (such as my XP-stats and level in Star Trek: Online or the menu bar in Flight Simulator X). also while able to auto-hide, the app dock was huge and took up a good amount of screen real estate, could not be relocated more naturally to the bottom of the screen, and also when auto-hide was on the adjustment was somewhere between 'why won't you go away?' to 'how do i get the bloody thing back?!'
the unity dock and Unity itself were meant for netbooks. which is why they really need to rethink the size of it, given that most netbooks only have 10" of screen area to begin with
Samsung Galaxy Precedent (rooted, AreaRom 3.4 , sd-ext w/ 3.65GB internal space)
Kindle Fire (1st Gen, rooted, AOKP JB 4.1, Nova Launcher)
Samsung Galaxy SIII 4G LTE (rooted, Carbon ROM)