Beyond impressed with this. I've been wanting to use the PS3 Navi remote for my HTPC for years, but I didn't have the willpower to dig into it like you have. Also, thanks so much for the PS4 remote drivers. They worked flawlessly. Now able to use the Nvidia shield without having to pair/unpair its remote (next step is to run Steam Link on the Pi and then use it directly on that in a different room).
Also happy to beta test, although it looks like you have plenty - I have a plethora of Windows machines, Pi's and Android TVs and tablets (also, as an aside, I'm also happy to give advice on career paths into coding if it will help - I manage teams of coders, previously at Atlassian, now about to join a startup. Was surprised to read it's been difficult).
Looking forward to the final commit!