Please improve the filter system for pipework. There is no Storm water system as part of the revit system types.
Also for pipework to be filtered as required it needs to be associated to a system. However Storm Water systems can be gravity fed & do not always require a fixture as part of the system.
As far as I can tell the only way to associate pipework to a system type is through connection to a fixture, this needs to be looked at again.
We need the ability to assign pipework to a system without connection to a fixture.