Awesome idea. A friend of mine just got her first Android phone, and is pretty clueless about installing APKs, even though I rooted her phone and walked her through it with Root Explorer. This will make it much simpler for her.
Samsung Moment>HTC Evo 4G>HTC Evo 3D>Samsung Galaxy S II Epic 4G Touch>HTC Evo 4G LTE>AT&T Samsung Galaxy S III>HTC One
Nexus 7>Nexus 7 (2013)