multi-tasking and more convenient navigation in general
better integration of contacts, etc. with other stuff
finer control over data used by applications
better notifications
more lock-screen functionality
more integrated calendar
the moto version of tasker, which sounds better than tasker
Mostly, I am hoping to recover some of the intuitiveness of operation that I lost when I gave up my WebOS device. Yes, that was laggy as all get out, but I didn't run around in circles clicking stuff over and over, and retyping addresses like I seem to do in Android. With leadership from the WebOS team helping out with ICS, I expect a better user experience.
I'm just as happy not to have nfc, honestly. I don't want my credit card info too easy to hack.