The event calender would be a great way to liven up fleet actions, pvp and all the other dailies. The fleet actions have been dead since the queue system, but if you add them to the calender for which ever one is the daily then it would be easy to get one started with everyone doing it at the same time. You have done this with the cystaline entity fleet action so why not all of them?
Do this with PVP as well. Everyone knows this game has long waiting times for PVP queues to pop. Putting it in the event calender would go a long way to solving this problem. And especially add one for the otha warzone which would get the place more active.
This should be done with all the dailies which include the Breen, Devidian and KDF dailies too. They can get boring doing them on your own every day but lets say you have Aiding the Deferi or Path of the Warrior pop up on the event calender, you'll access them through the PVE queue for that time and be auto teamed with 4 other people.