As in the title, what if, with a POD around 324-325, the Greeks generals succeeding Alexander manage to divide the empire without the amount of violence experienced IOTL? This could mean you would have more players surviving and creating smaller realms, this could also mean the continuation of some campaigns in Arabia or North-Eastern Turkey.
Basically you still get a division but more smoothly and more coordinated. Obviously the 2 Argead successor would have to be removed from power even symbolically eventually.