Some app on the toolserver have had this function ,which if add your username on the whitelist and pass the authentication on the toolserver to make sure you're the user on Wikipedia's project, then you can watch the watchers' count of the page which the watcher of the page lower 30 people.
I hope add this function on the mediawiki sofeware.This function like that:
A right can permit the user can watch the watchers' count of the page which the watcher of the page lower 30 people. Administrator have had this right,autoconfirmed or confirmed user can ask administrator to give the right.
That's my suggestions,and please forgive my bad English.