I have a suggestion- A new Android demo for use in mobile compatibility testing, that could feature full 3D features, comming in 3 versions, one for each performance tier. On the device compatibility list, the devices are tested with Tappy Chicken, and if they run it, that means that their device supports UE 4. However, this doesn’t mean that the devices could perform in 3D.
For example, my Samsung Galaxy Mini 2, which has just a single cored 800 mhz processor, runs Tappy Chicken very well. However, I doubt that it could ever run 3D demos. For Galaxy Mini 2 it's an obvious thing but for mid range phones....it is not clear. This is way 3 versions of a 3D demo on Google Play could be very useful. People could give a lot more feedback, not just if Tappy Chicken runs or not, but what performance do they get on each demo tier version.