We are working on a new design that uses magnetic pins so the wiring inside of the sliding parts does not move. The game pad Motorola announced is not ours, despite the similar design. We created ours at the Motorola Mod The Future hackathon back in December of 2016. See that article here:
https://techcrunch.com/2016/12/16/moto-mod-2/
Thanks for the response. Considering I just recently upgraded to a Sony Xperia X Compact, I probably won't be getting a Moto Z anytime soon. However, having this available for it would make it far more tempting.
Even if I don't buy it in the Indiegogo campaign, as someone who has wanted a full and proper replacement to the Xperia Play, I can tell you that there are certain things that I would look for:
1. Full console-level button layout support: Directional pad, 4 face buttons, 4 shoulder buttons, 2 analog clickable joysticks (or sliding analog pads with L3/R3 buttons close to them), and Select and Start buttons. This should assure that any emulator (except maybe N64) or PS2 port should be fully represented without needing specific touch screen controls.
2. Directional pad should be responsive and detect 8-directions with ease. D-pads that are mushy or sit too high often have trouble detecting diagonal directions and prove ineffective for fighting games. The Xperia Play had the best D-pad I've ever seen for a phone and even beat the one used on the PSP. Nobody has replicated that level of quality in another phone controller yet.
3. Shoulder buttons should be comfortable to use and easy to reach. Having them on the back may be rather awkward to use. I hope you playtest those well for comfort.
4. Focus should be made for the gaming controls over media buttons. The media buttons sticking out of the bottom look like they would be more in the way. I would prefer that the gamepad be as compact as possible and avoid anything that unnecessarily sticks out of the main unit.
5. I wouldn't worry about any other features except for maybe the extra battery as gaming does sap away power pretty quickly. It sounds like you're already planning to make the battery removable to reduce bulk, so I think this is a really good idea. Giving the user the ability to choose between portability and longevity is a good one.
These are the kinds of things that I would find important. To date, there still hasn't been a decent replacement for what the Xperia Play offered in terms of compact gaming. But it was also far from perfect. Your project sounds very promising as a potential replacement and I hope it does well. Even though I have no ability to use it yet, I will consider contributing to it if it develops in a direction that I like. Thank you.