Originally posted by Squirrel
That's exactly my point. If you can't set diplomacy states, you can still place cities and units. Therefore, we will be able to make scenarios that are playable, but to fully enjoy them, we must buy PTW. They want us to buy PTW when it's out, it's as simple as that.
Why else do they refuse to answer this question? They have answered many other question, so why not this one?
Besides, your Civil War scenario will still be playable. There are only two sides, so you just start the scenario and declare war right away.
It will be much more complicated with e.g. WW2 scenarios where several countries are involved. If you load a scenario and the diplo states are not set, it may happen that England and Germany sign a MPP... To avoid this, we need to be several players playing the scenario. And then we must buy PTW...