What others said, armies have pros and cons. They can be organized, mean they can make/hold events, keep making the regiments coming to event therefore making the community active. However it has cons if the armies won't allow other regiments to participate in particular event only if there in the army, and other examples like that. I honestly see no army is needed, but it doesn't have to be banned either I think. As far as I know the only Army in the American side was the Continental Army, other regiments were without armies, now probably the british had a few armies. But yea will see what others think and what'll happen!