It's a great mechanic, isn't it? It just adds so much more to the game when you're wrestling to keep a station in the right alignment or, better yet, trying to flip a system.
I notice that the "no content!" crowd have died down - they've either been given the modhammer, moved on, or learned what the game is about. I hope it's the last option!
Actually - does the 70% trigger apply to both civil wars and invasive wars? I know it works for invasions once all other states are cleared, but I don't recall ever being involved in a civil war like that.