One possible way to prevent an outnumbered force from being trampled, would be to modify ack strength and numbers inversely with force strength. Add some 88mm and extra 40mm near the main bases and critical assets. As player numbers increase, start shutting down the extra acks.
A small force would have extra acks to defend their last fields. A large force would have fewer acks, and need to devote some of their aircraft to defense.
During off peak hours, all countries would have extra ack, making it very difficult to grab their main fields, or destroy their critical assets.
popeye
