Hi @Ryan Duce, 

Thanks for your reply point 2 of your list gives some hope for us. 

The use case is that our colleagues will use Azure AAD as their SSO source and should be able to access the instance without having to re-login or their experience shouldn't have to change.
But our Alumni's would use Microsoft B2C to access the Alumni portal which they would preferably access correctly by using instance-url/asc