Why can I not assign a new password to ALL my users in a bulk operation

In a non federated setup password handling is a crime. I end up with around 50 user who (most likely) all have a different password! For security reasons I want to, once in a while,  force a reset for all my users, but then they have to use valuable time doing so through their individual CONNECTION Clients

I prefer a setup where the Administrator can force a new (global) password  to all users. It should not be a big deal to implement this as a future BULK action.