So not sure if this has been answered but can someone expalin me how this ''-The game should include cooperative multiplayer where multiple players control a country.'' will work?
Also,this will be freaking epic "-There will be coalitions, which are targeted alliances against a specific country (offensively or defensively)."
Same as EUIII. Two players can control different parts of the same country at the same time. Thus, you can have one person handling military matters on one side fo the kingdom whilst another deals with building and diplomacy elsewhere. If neccesary you can then switch roles.
Basically it ends up meaning you need less pausing, since you've got two pairs of hands dealing with things.