To me, the coolest thing about the original Diskwars was the plurality of IPs involved. I would like to see this explored again, with factions from other war-themed licenses held by FFG: A Song of Ice and Fire , Lord of the Rings , etc. How feasible this is given the rights they hold, I don't know. I speak only as someone who enjoys crossover beat-em-ups.
Who else would like to see disks from different properties meet on the battlefield?