It'd be cool to make use of apps' special launcher shortcuts as sub-commands. "Firefox Passwords," for example.
I don't think you can read these without being the 'home' app, but I could be wrong.
Emilla actually wouldn't be a bad "minimalist" launcher, but I'd like to implement this without tossing away your home app. Look into what this uses to discover activities.
I'd hope for these to not have ridiculous names like "LauncherActivity"