Applying index permissions by exception?

We have a lot of index patterns and only a few of them match indices that are sensitive and thus must not be viewable by the regular users access role.

So what we end up doing is listing all of the index patterns in the general access security role except for the few patterns that match sensitive indices.

Is there any hope that one day we could apply index permissions by simply settings things up by listing the patterns the users SHOULD NOT be seeing, thus granting access to everything else?

Or is there any way of doing this right now?

Thank you.