For now we have the coalitions removed mainly because they are not yet perfect even in vanilla, I think they could be good once they get tweaked a bit and we can modify infamy on a case by case basis via events and different cbs because at the moment Aegon the Conqueror get pretty max infamy during the War of Conquest so then the whole world will feel like joining a coalition against him which just did not happen.
Shattered retreats are going to be in but have been tweaked so they have a smaller max distance they can retreat to so you don't lose a battle in Harrenhal and have your troops run all the way to Highgarden or something.