I was thinking of a huge inter-faction event where all factions work together to do damage to a enemy i.e. the Consortuim and the more damage you do the more event cards you get for your faction i.e. a legendary for your faction if they did over 1 million damage
It seems at times flying units can be a pain to hit with ground units without AntiAIR, so why not make a skill for ground units to avoid attacks fom flying units i.e. Shroud 50% chance to dodge attacks from flying units and an AntiShroud skill Deadlock allways hits ground units
 "Tyrant")