Just a query to see if a particular mod would be possible as things stand with the game.
Like EU, I imagine there will be a pretty sequential storyline leading to a final battle. Once completed, this would end the game.
What I'd like to know is if there is a way to either not complete the game at that point and progress to another mission or to add in missions of your own along the way and return to the game once done.
An example would be that one of the alien races had a goal of their own. Preventing them attaining that goal would be a key mission, but you'd want to return to the main storyline once it had been completed.