To add to the PVP battles post:
Courier
One group has a certain luggable and needs to deliver it to a specific Person, which would be the battle coordinator in this case, however under some other name. The other team needs to try and steal it and be the ones to deliver it. I kind of envisioned using Digger for this scenario, because he's supposed to be looking for artifacts and what not, and so he would pay a money to whichever group can get it to him. I'm pretty sure using a Lugable helps to keep the team from recalling to the drop off spot.
A variation of this would be to have on group trying to bring it within a time limit and the other group just needs to steal/prevent them from doing so. Even if the opposing team stole it, the courier team always has the chance to steal it back and still make the delivery.