I'm not sure how OAuth can help. Does it allow you to choose whom to authenticate with, or does it tie you to one specific provider? I much prefer Persona, but Mozilla has abandoned it, and most resources around it are dead links. What a colossal shame.
It doesn't require a mobile phone. A client on your desktop can handle the authentication.
There's also a mechanism[1] to change your master key should it become compromised. Looks like a huge drawback is that it requires you to store an offline "Identity Unlock Key" somewhere.
What's worse than crappy implementations is that every provider has their own version of implementation-specific crappiness that is inconsistent with everyone else's.
