MEP System Browser isn't very useful: it just reproduces ducts structures (why pipes aren't considered as well?) but it doesn't allow you to reorganize your systems.
A System is arranged in many branches (the one served by Heat Pump n°1, n°2, etc): I expected to have the possibility to rename every branch. The subsystem name should be available for schedules and notes.
At the moment we compose the subsystem names with Expressions in Properties: the problem is that some properties are read at Route level (Expressions), some others are read at Segment level (Graphical Overrides).
