I reckon there needs to be more than 5 warzone maps, all have their own aspects of play like sniping and vehicles on Noctus, close quarters on dark star, you get my point that each have the style but there needs to be more maps if the next update after memories of reach brought out one other warzone map would be good but they need to come in bulk to keep it interesting.
interactive objects such as the doors on dark star is pretty cool and some maps should implement that in other ways Aswell.
mainly though just more warzone maps.