i assume the next game will use the Larian engine so will be turn based combat that doesn't work in multiplayer... thats really where larian likes to be in their design
as for what rule set and story... "frankly my dear i don't give a damn"
most people will pick it up and play it unless they really drop the ball like project red so a bag of poo by Larian is about the only way they can fuck it up at this point
