would be cool, but i think pathing is going to be the issue since people will try to include armies with these dreads.. so u will have say 4 dreads + their 128 unit armies, trying to make a line formation, which must then navigate around these corridor maps...
when our units are already pathing the long way around an obstacle(and thats even without an army), i cant imagine how much worse pathing will get with formations that inlcude multiple dreads...