PGP as alternative/addition to TOTP

I would personally like to see PGP added to able to be used as an alternative method for TOTP 2fA, as well as the option of adding it on top of TOTP (or vice versa) for 3fA. PGP could also be used to verify who you are if you lose access to an email, TOTP key, or your password.

Thanks for your suggestion!