When my pool was built, the builder plumbed three lines into one side of the pool. The two near the ends are returns. The center one was supposed to be for a pressure cleaner. I deleted the pressure cleaner and asked that the center line be tied into the pump suction to be used as a vacuum line, which I used a few times before getting a robot. Since then I have not used it. I am thinking of re-plumbing the line as another return. Would this be beneficial, and would I ever miss having a place to attach a vacuum hose?