The larger the maps, the less inclined I feel to buy this. I can't stand the slow-paced game of hide and seek that Black Ops becomes every time a new map pack is released. Small maps are good for Call of Duty. Maps like Silo aren't.
But larger maps are fun in some ways, but I agree. They did add another Nuketown-esque map (Drive-in) which sounds very fun. They should make an all small map Map Pack for their 4th, if they plan on releasing a 4th one.