Would you guys want to see shields and/or mines in a new map? I personally like that cargo has no shields or mines. You don't have to worry about "oh shit this demo's probably going to spam me" or "oh shit the jan has a new shield" and you can just focus on the objectives or killing people.
But on the other hand, Hoth is the most popular map in NA and has both -- is it the map people love or the shields and mines?