You can pretty much guarantee guild wars at some point - just wait for it.
Bounty boards with options that force you to fight a certain way, kill a certain thing, or protect a certain thing (i.e. Nerf Herding) would just be cool. I know we've had a thread on it already.
What I'd really like is for them to experiment with a "tactical board" your team of 5, turn based verse AI, on terrain board where they get options of taking cover, charging with their basic, Jedi would need to get blaster deflect. Objective should still be kill the other team, but it opens it up a little.
Give the guild a base building option. Special raid gear - maybe as part of the inevitable Deathstar Raid
Add the guild base as a defensive bonus to the Guild war option with a 'Tactical board' -- you need to attack an opponent but whatever defenses have been put up can help the defending side.
My only caveats are, clearly a battlefield needs to be small, smaller then a chessboard in terms of squares. Shouldn't take any more then a ship battle, less even. Toons should get a move/defense option - then an attack.