Comment by charcircuit

>You could imagine an API that sets the UID of this user

No, I think there should be a dedicated user. People will configure it in insecure ways if you let them.

>easily automate the creation of a complicated namespace to contain that process

Why is this being done. The core dump has already been created.

>coredumpctl actually works

Coredumpctl would still be possible without forwarding.