Selecting from which servers to get notifications with a simple list

My idea comes from the nuisance that is manually going to each server to turn notifications off (which is pretty annoying when you are in 20+ servers), instead of being able to select from a list with an x and a tick whether we want them or not enabled. And if you were to want notification on certain specific channels from a server you could control that by going to the settings of that particular server.

Just a really easy and dumb idea but I really don't know why it isn't like this by default. Cheers