Smaller than the small maps we have, to be precise. Less travel time/ hide-and-seek, like on some current maps. Maps get changed over faster, ie: win teh warz people get their 25 perks faster. Another bonus would be a larger collection of maps, due to less work involved to make one. If the population rebounds and they become too crowded, they can be used when the map gets reset during hours of low population. When the numbers rise, the horde will reset the map and a larger one gets put in place.
Basically, the maps are fit to the population.
