DV holding the majority of gates in each map doesn't really benefit anyone, neither big clans/alliances (defenders) nor small clans (attackers). Most servers will barely have any gates left, and it will put attackers at an even bigger disadvantage.
Before this update, defenders would be able to regroup in a specific place, and attackers would be spread out, not knowing which place would be hit by attackers. Now, after the update, defenders will be in large numbers at the few gates that remain and will give absolutely no chance to small clans to be able to hold anything.
Currently, many small clans have their chances to hold gates due to there being 5 maps to distribute among clans on each server. If the number of gates decreases, some of these clans will lose their chances to bigger clans. Which still means that the minority is at an even bigger disadvantage with this update.