I think what Rita is referring to is the fact that many characters ,and story elements were kept even if the engine was rebuilt from the ground. There was a time in 2.X where you got to use your gear and weapons on challenges rather than replacing it on the first or second run Lamb, also everything you named ended up being a cobbled remake or failure save for PotD. They are putting this expansions relic into a Diadem like zone supposedly , and lord knows I hope it isn't hot garbage but we'll have to wait and see.