Things that WP definitely needs.
My L920 went out for repairs because I washed my jeans with the phone in it's pocket. To my surprise, the phone works fine, just microphone messed up. Rogers gave me a Samsung Nexus a loner. Good device. First time using android, didn't like the UI at all but functionality kicks ass, 10x more features then I need. But a few things that I will definitely miss when I get my L20 back
1. Temple Run
2. Facebook Messenger
3. Some sort of notification center (I guess it's being worked on)
4. Updated versions of facebook, whatsapp and Twitter.
Not a long list, but if t happens with L920, it'll be nirvana for my mobile soul.