I wish that MEP had the ability to Create a MVparametric Part that has real time asignment of connection points and editing features to relocate the connection points of the MVpart if needed.

Example: We have an electrical Vault that has to been core drilled in the field to fit the current installation need. The vault sizing is controlled by Industry Standards and the database that drives it. As for the Connection point locations? These are user assigned on the fly and can be edited on the fly. How cool is that? I can do it in lisp. Now let's see it done in the Core product. What a time saver. Good Luck Autodesk.