I've played many tabletop mini games in my life and one rule that always intrigued me was off-table support.
Old 40k had it where you could allot points to orbital bombardment and WOTC Star Wars mini game had General Veer's special ability to call in an ordinance strike. This got me to thinking about incorporating a rule into x-wing. Imperials could have a Death Star support shot in epic play.
Rules could be when the imperial player has less ships than the rebel player, you could call in off-table support from the Death Star. It would be a one-time shot against one huge ship. The imperial player gets to roll 10 dice and if it manages to cause 1 crit on any hull section of the ship, it is destroyed. In addition, any ships within range 3 would also be destroyed. As the admiral said," we cannot repel firepower of that magnitude!"