A couple of questions/issues that others here might know off the top of your heads:
1. (Device ) Search, the one that searches everything on the phone. I used it often to find apps, people etc by long pressing on the menu hardware button. Doing that doesn't do anything for me on RR.
2. Flashlight, mobile data on the notification bar (and other customisation). Haven't stumbled across where I can change this.
3. I've wanted to install a few APKs I've downloaded on the phone (compared to the normal ADB install). I get to the stage where I'm saying to go ahead and install the app, but I can't press the Ok button - it does nothing. The Cancel button beside it works properly, and abandons the installation that I was hoping to achieve. I have sideloading allowed and have been able to install apps this way prior to ICS just fine. Another setting on ICS upwards?