It’s a good idea. I have family who insist on calling without messaging first and I feel like this helps bridge that gap a bit. This can tell me “walk out of your meeting a family member is dying” when I get a random call. A text could do the same thing but some people are just incapable of grasping that the person in the other end of the phone also has a completely separate life from theirs and may be busy.

If it gets abused then that also will be an ignored call.