Starts getting tricky in terms of balance, in that case. Once someone gets ahead with a large army it would be pretty difficult to stop them, I think. Right now at least you need a team to lock in an active server since you have to send armies around, but if upkeep is low it could happen solo.
I've toyed with various ideas for making holding armies viable over the years but I've never come up with a good solution to the runaway locking problem.
I've toyed with various ideas for making holding armies viable over the years but I've never come up with a good solution to the runaway locking problem.