Diminishing returns is the way to go. I.E. 2 first stacks would always fight at 100%, 3rd always at 95% and so on, until the extra units would not add anything. This way it could be applied to the AI too.
Hmm. Actually this sounds exactly like the command limit. Maybe the true solution would be lowering max command values? 1-3-6-9 for example?
Also, all planes should have more air defence points, to reduce the massacre when the other stacks air attack exceeds the other ones air defense.
How about air defence efficiency always at 75% and tripled defense points? (Air defence efficienc lowered so that planes would actually get destroyed too).
Hmm. Actually this sounds exactly like the command limit. Maybe the true solution would be lowering max command values? 1-3-6-9 for example?
Also, all planes should have more air defence points, to reduce the massacre when the other stacks air attack exceeds the other ones air defense.
How about air defence efficiency always at 75% and tripled defense points? (Air defence efficienc lowered so that planes would actually get destroyed too).