As far, as I undersood the RJ logic, RJ would install every application of a user, if he's loggin into a different Computer.
What if RJ checks Intune first, if a user is already registered to another Computer, RealmJoin asks, witch package should be installed on the "new" Computer.
[ ] Mark all
[ ] Adobe Reader
[ ] Chrome
A user can now decide, if every package should be installed or not.