User whitelist in a table

would it be possible to have a table that has all an apps users listed in it, and the app is shared to anyone on the table, so when you add a new user you can just add them to a table and not to each individual app as we have to do now.

This is my number 1 feature request.

Yup. Not having this is a major pain. Especially with Apps with > 20 users or frequent changes