RELATED IDEAS
Individual signature should not take priority over shared signature
As an admin, I can define a shared signature for a given channel/channels. However, if a user creates an individual signature, then the individual signature will become the default.
How could an admin make sure that for a given inbox/channel, their desired signature will always be used?
This is something we're running into as well. Currently the signature settings allows you to select the inboxes to apply the user's personal signature to, but you have to go through and select all the inboxes you want to apply it to. When adding a new inbox you have to go add it in if you want the user's personal signature. It would be nice if there was an option to exclude specific inboxes rather than having to choose the ones to apply it to. If I could exclude an inbox and allow all others to use the user's signature that would be far easier for me to manage.