There could be some serious improvements made to the load calc function.
It is great that Revit can define spaces and zones. But, it would be by far better if these zones could in turn be assigned to air handlng units.
As an example, I would like to be able to assign spaces to zones, with each zone being a fan powered box. I would like to then assign these fan powered boxes to the various air handling units.
I would want to be able to define the properties of the AHU's, incluidng leaving coil temp, total fan static pressure, etc., etc., etc.
I wish the guys at Autodesk would take a long look at Trane Trace 700.