We already know there are many different roles for players to play in the event. It’ll be interesting if the roles have separate ranks that gives different perks, all of which have to be assigned before the event starts.
Scout – +1 vision, 10% reduction in energy cost for moving BUT can carry 100 less troops capacity
Frontline – adds 0.2 attack modifier per player that participates in the respective wars BUT player’s energy cost for defending increases by 40%
Defender – adds 0.2 defense modifier per player that participates in the respective wars BUT player’s energy cost for attacking increases by 40%
Builder – if builder is present at the time the moment the tower is built, reduce 20% cooldown for building BUT player’s movement cost is increased by 20%
Soldier - no positive perks but no negative perks too. The most flexible rank.
Any unassigned rank to players, by default, will be soldiers.
Of course, after assigning, a scout can still attack and defend, but with less efficiency due to the perks.
It is also for the alliance to assign however many of the ranks they want based on their own playing style.