1) The ability to use speech more. On android phones you can do it in almost any place you can enter text. While we're at it, better speech recognition would be nice too :/
I also like how on Android you can use alternative Speech Engines. For example you can use Vlingo instead of Google and get better Accuracy and Faster Cloud Round Trips.
And yea, I noticed that there were so few places where you can input text via voice.
I packed up my Android phone cause I'm tired of carrying 2 4"+ phones everywhere and I want to try a month or so sans Android. I dunno how I'm gonna be able to live without my SwiftKey + Vlingo combination :( We shall see.