This project has a huge potential. And as it happens, I got a 24/7 running RPi B+ here for server purposes. Great device.
It is most unfortunate that the chipset of the Pi doesn’t support usb out as most current gaming peripherals use it nowadays. Hopefully, you’ll find a solution. Hell, the idea of hooking up my ps3/x360 controllers and arcade stick to a friggin’ Pi to use it on my PS4/X1 makes me all euphoric.
Anyway, I wish you guys the all very best! I’m sure many people are going to be very interested. Your work and appearance so far seem to be quite professional.