I am an indie dev working on quite a large project that will possibly have a WP8.1 port (as its a universal app currently, it depends on if i can make the controls work on a smaller screen - main target is consoles and PC)
Obviously, the Moga means controls are not a problem. So I am trying to add Moga support to my game.
I've hit an issue, and one that would explain why support for the Moga will drop over time. The SDK completely stops working the moment you target 8.1. Target 8.0 everything is good. Upgrade project to 8.1, pad never connects. I've tweeted Moga but had no response. I would recommend that if you want to see WP devs continue to add Moga support, you all give the moga twitter a prod about updating the SDK to support 8.1.