My son and his friend love the game so we came up with a multi-player variant that works surprisingly well. Most importantly it is fun. Basically we use a dice or dice app to randomize which player will receive the damage. Anything with melee/range dice damage get dealt with this way.
Specials-events-support are players choice. Discards and disrupts the same. This keep the game moving along. It is not perfect but we have fun and it feels fair with-out being too fair.