Customizable structures/modules within certain limits Such as?
Mission specific to individual planets. Upgrade, adding passive stats or special structures, or killing hordes of invading npcs An alternative to a blockade kind of?
Base blockades that take the entire legion to defeat This could be problematic for less active legions
Huge npcs that can be locked like enemy bases +1 if shareable to BP's
Comets, quasars, black holes, novas, nebulae, all the various strange things that we know is out there in real life
Repeatable missions to convert artifacts into stronger ones. I.e. rescued prisoners into liberated battalions
Planet sharing pacts NO!
Bounties. If I kill 1000 flamehawks or chargers it would be cool to get something special Make that 100,000 flamehawks maybe
More standard npcs. All those races out there and all I see are flamehawks? Tsk Hell No! You really want to dilute the npc pool with commons?
A way to destroy or merge planets Bad planets are your friend. don't destroy them. They provide cover for your good ones
More 'events' happening on planets
Npc owned planets
Base storage that all players can draw from or put into
Tasks legions can perform to improve base shipments daily
Diplomacy with npcs. Maybe that smuggler wants to live and can offer something to let it fly away
worm holes. They can temporarily allow access to those holiday events or special domains where things get weird
legion tournaments. Kinda like friendly wars between legions
Expanded research tree Never going to happen unless its an entirely new branch
More artifacts to share with fb friends or bonuses for getting ppl to join up and play
More ctlab recipes
Mini-games http://www.playpacmanonline.net/ Here you go
Free spins on the galaxy wheel