How do you think three aliances will effect keep battles? Say The Ebonheart pact controls a keep and is under attack from the Aldmeri Dominion, but then the Daggerfall Covenant also attacks the same keep.
Will the Defenders be forced to fight a two front battle or will the attackers wear eachother out giving the defenders a chance to hold out?
What if a keep is taken and the third faction comes in to take it before the keep can become properly fortified/ repaired?
personaly i think three way battles will be very dynamic and interesting.
lemme know what you guys think