http://i.imgur.com/lwcLuWG.png
this is a bad, bad idea. You need to bring the cost down significantly because no one will pay 85$ for this.
If this had no noticeable lag and worked on 360, Xbone, PS4 using any controller you want, it would. But unless they’ve cracked Xbone security and have access to 360 security keys and chips, then I highly doubt it.