From a user perspective, the interface is super cluttered. Its like Windows, just a screen full of icons and battery-eating widgets.
http://thisismynext.com/2011/10/18/galaxy-nexus-android-ice-...
Check the video out on the link. Watch how long it takes him just to find the camera for the demonstration--at first he doesnt even know which way to go. Its just too much for a phone if you ask me. Even with its oversized screen the Nexus looked crowded. Its not a tablet--less is more.
Furthermore, as a developer I dont like this descision to keep apps running even when you side-swipe them out of the 'active-app' list. Google reps claim that Android can handle resources well enough that we never need to worry about completely closing any app but if you ask me that sounds suspect. If resources are that plentiful and the OS is still completely open-source then its only a matter of time until this is exploited and the phone starts to lag. And if something does go wrong in an app I apparently can't kill it? I just see a number of problems down the road.
Very disappointed.