There is already a topic "things lost with ICS" so how about the changes that have been made that improve the experience.
These are things I like:
-Improved keyboard, more accurate and you can long press a previously type word and replace from a menu of suggested words.
-Chrome browser. Its nice having linked bookmarks between devices, and tabbed browsing is nice.
-Long press home to show open apps, swipe away to close or scroll up or down to navigate. I really like this!
-Overall smoother operation
Lets hear what else everyone likes about our tasty new treat, ICS!