Things I still miss:
I still miss that android apps can download in the background so for example when I wake up I the morning any new podcasts I'm subscribed to are already on the phone. Contrast to iOS6 where I have to remember to manually run the app. Which generally means I only run it just as I'm about to get in the car. I then sit in my entry way for 2-6 minutes waiting for my podcast app to download
I miss that apps can register for more events and act on them. For example any app can register to get an event when a new photo is saved. It can then upload, in the background, that photo. That means I can install one Flickr app, one g+ app and one fb app and the photos get uploaded to all 3 services no matter which app I use to take the photo. Contrast to ios6 where either every photo app has to have built in uploading options for every service I could possibly want. Or, I have to manually run the specific app for each service.
I miss auto app updating. I don't have as many apps as most of my friends on my iPhone but it seems like every day or every other day there's a number on the app store bugging me to update stuff. having to manually update is a distraction, chore, and annoyance I don't need.
Of course I miss being able to choose various default apps. I want Camera+ to be my default camera. I want Google maps to be my default maps. I want gmail to be my default mail app. I want a different apps to be my default music player and video player. I want chrome to be my default browser.
I miss being able to customize my desktop and lock screen. Not just adding widgets but changing it to use other apps. See http://slidescreenhome.com as one example.
I miss geeky things like being able to run an ssh tunnel in one app and use that tunnel in another app.
That said I'm still on iPhone. There's still plenty of things I like about iPhone over Android. I don't see myself switching back for at least a few more generations.