Your comments

Had originally raised this here: http://support.ajenti.org/topics/443-two-factor-authentication/.

As Persona is shutting down shortly, it'd be good to get some standard MFA options.

Any word on a standard TFA authentication method?

Seems to be raised again here: http://support.ajenti.org/topics/373-two-factor-authentication-with-u2fother-providers/

I wasn't a huge fan of the Persona implementation, so I'm not too sad to see it go.

I'd prefer the more standard TFA auth flow as per something like GitHub, Google, Microsoft etc.