There is an existing idea for the ability to restrict viewing of specific NXT tiles by user, but I think that should also be extended to third-party connected apps/tiles. I should be able to only give certain users access to some of the third party tiles. It doesn't matter if they don't have login information required to view the information - it just clutters up the constituent record and then I have to volley questions where people think because they can see that it exists they should have access to the data within.