One major feature that I use on AOKP is custom nav bar. I have 5 icons in my nav bar phone(long click contacts), back(long click kill), home(long click app draw), recent(long click menu), messaging(long click Chrome)
Doing this also allows me to remove the dock from my homescreen, no dock and no search bar gives me a very open 6 by 4 grid for widgets and any other app icons i might need. Allows me to run only 3 screens and still have everything I need rite at my finger tips.
Better battery and speed is also a nice thing.