Aha, finally got the map editor working. I had actually wanted this way back when to simulate battles in this mod and see their effects. If only I had known how effective bombers are!
Most every EFS game has been "X unit is more effective, because it costs more and took longer to research". Then you build stacks of these more effective units and hope for the best. That's all fine and dandy, but since I've been playing EFS for a million years, I'm looking for something different, a more rock, paper, scissors approach. Not entirely, of course. What my goal has been to do, and it's a challenging one, is to re-balance EFS 1.4's separate arms phases. That is, the separation of combat phases based upon unit types. Direct hits mechanized, close hits foot, that sort of thing. Most people know what this led to - avoiding mixed stacks altogether.
My aim has been to counter this tendency by creating ultimate "counter" units that can completely wipe the floor with non-mixed stacks, and are themselves vulnerable to mixed stacks. For example, tank killers mopping the floor with mega tanks, and anti-infantry tanks dominating assault legions, but a half/half stack of mega tanks and assault legions beating either. All the while a single stack of mega tanks or assault legions would beat that mixed stack. The goal is to add some more strategy into how you're grouping your units and why. If a player is rolling around with his death stack of anti-tank units, and you come at it with all infantry, he's going to regret forming that stack. But if you had been focused on heavy mechanized units, he'll be thrilled. So this would significantly increase the value of intel on other players - what units they're building in particular, how they're organizing their stacks, etc. This is all somewhat hard to achieve, although I was making good progress before my old hard drive died and wiped everything out. I think I'll resume this and try, once again, to bring back rock, paper, scissors, along with the same thing in space - frigates/destroyers crush fighters/bombers, fighters/bombers crush capital ships, capital ships crush frigates/destroyers. How I always imagined it.