Notifications will get to be a problem for users and the site admins, won’t they? I hadn’t been keeping up with them and had about 400 notifications. The UI doesn’t seem to have an option to delete all, and I haven’t looked yet but if there is an option to autodelete after x days or only keep the latest y, it may be a good idea to make that the default. All that being said, it’s a good problem to have come up if it’s a scaling concern as the site grows.