I guess the main problem is the second part of the subOP comment: >While you're at it, if there is a way you can get the Google Identity Platform PM to let us

I guess the main problem is the second part of the subOP comment: >While you're at it, if there is a way you can get the Google Identity Platform PM to let us know when some form of multi-factor auth besides SMS will be supported, that would be great! When they respond they get inundated with random requests and ailments that they have exactly zero control on.