otterley parent
By all means, make a proposal to the FIDO Alliance that solves all these problems without introducing new ones. You're going to have to anticipate all the objections and be prepared to answer them, though.
I'm not the one trying to push a new standard, but sure, I'll do it for them. Explicitly allow users to export and back up their private keys in a documented file format, make client banning hard/discouraged, and no longer maintain a naughty client list. That's it.