It would be nice if the change notes tab of a workshop mod's page can be an RSS feed we can subscribe to.

This would be useful for dedicated server owners. For example, i run a dedicated server for Left 4 Dead 2 which has many custom campaigns installed. There's no official way of auto-updating addons installed on a dedicated server (as far as i know). But just having some way of receiving notifications for whenever any of those custom maps receive updates would be nice that way mismatched versions between server and client will never be an issue.

For players this feature could somewhat be useful, since they can use it to be notified of the change notes themselves instead of being surprised by sudden changes to their mods in game.