One of the first questions any vendor asks when approaching them with a request for support is "how many people are using Linux?". It would be nice to have a method that allows people to very easily register as a FFADO user to obtain convincing statistics. People might have privacy issues with this and hence we should address these up front.
The main point is that having numbers make a huge difference. Being able to tell a vendor how many people have used FFADO software with one of their devices is VERY effective. Even numbers as low as 50 are significant in this market. I literally have seen the faces of vendors who I told that people sold their device in favour of a supported device, and that's only one person.
This is not a blocker for a beta, but this should be in by the time we release officially, such that it's in the distro's.