We should soon have support for installing apps (bug 911785), but we should also support uninstall for the apps in "My Apps".

I'm not sure that's a blocker. You can easily uninstall it manually on the device. Also, we already have too many buttons here, whereas in the simulator addon we ended up simplifying the UI by stripping down button to only two. I'd prefer simplifying buttons for the v1 and then take some time to think about how to implement all necessary action items without ending with tons of buttons. See bug 911785 comment 4.

Apps are gone now.