What I would love is if instead it asked for both factors under these circumstances:
- option A - on every login like it is now.
- option B - at least once every X days, with a warning that "within the next three logins you'll need to use your second auth" so I will know when it's coming without being locked out because my phone is dead.
- in both of the above cases ALWAYS require two factor auth every time I change the account settings (like password, recovery addresses, etc.) Possibly even require it when I try to do things like purge a mailbox entirely or bulk email all my contacts.
Having this blended option would make it a no brainer for me
Edit: Thanks all for the clarifications below. I am going to give it a try.