Ability to exclude activities that appear on the actions button on a contact record
All activity types that are added to CiviCRM are included in the Actions button when you view a contact record. For sites with a lot of activities (particularly those which are used in connection with Drupal webforms andnot normally triggered in CiviCRM directly) this becomes a bit frustrating to manage.
Adding / filtering activities in other places uses the look up function, meaning the the length of the list in those places isn't really an issue.
See two attached images as an example. This isn't even all the activities for this site.