I think either way this game is going to be great. However, they will probably have some maps with a larger amount of interiors and some with less. At least that is what I'm hoping. If every map has a million windows that people can pop up from it could get irritating. But if some maps have some really nice building to battle it out in, whereas others are nice open areas with maybe the occasional roof or balcony it would provide a healthy balance.
Bottom line, every map + lots of interior or every map + little interior = boring. There needs to be a blend of some sort in my oppinion.
Any