I think we NEED the ability to add at least 1 extra Quicken ID to a Subscription.
Most importantly the way it is now, you cannot use mobile at all if you have more than one data file unless you want the other user to have read and write access to the SYNCed Accounts that are fully exposed to all users sharing QuickenID subscription on mobile app.
Many users are not even aware that another household member can read/write to their SYNCed accounts if using mobile
In addition, this would give the ability to get a 2nd credit score also.
The mobile overlap is a VERY serious oversight IMO and should be fixed this way or another.
Many people (like myself) maintain more than one data file in addition to our own for Elderly Parents, Spouses, College Children, Organizations, etc...