Campaign will probably just be the same old linear on rails experience it’s always been. They should open things up a bit, not open world but just more open ended areas where you don’t have to follow a specific route. Tone down the Michael bay Hollywood stuff as well. Basically stop aiming the game primarily at kids and teenagers, go back to call of duty 1 & 2 era where things weren’t so dumbed down for masses.
That’s commercial suicide though, so obviously won’t happen. Hopefully they find a compromise.