I'm not sure if anyone read the OP but he says that the map maker would be allowed
to make a mission area in the huge map and only that area would be rendered, not
that the map should be small.
I would guess there would be a invisible wall and only the area within and a few KM
outside the mission area would be rendered.
I think this would be a good way to render a small part of the map, and would be
fine in some missions if the mission area allowed enough room to manouver around
the objectives without being stuck in a small area (like CoD.)
