I'd like to use a Section Box (like Revit and ReCap) to be able to isolate and cut through just a specific part of the model and work on that area only. This might also provide more performance while working only on a specific tile(s) of the model. This Section Box should be able to cut through every feature in the model, so also imported 3D models.
It would also be a good idea to have some sort of a manager in which mutliple Section Boxes can be saved and loaded.