I work in Electric Transmission and Distribution.
What I would really like to see is the ability to place a flag on a a Feeder Bay or a Substation and then select an origin attribute.
Perform a downstream trace and automaticaly populate all selected features with the origin attribute given that the feature has the exact same attribute.
Example. Place a flag on Feeder 2 Recloser in the Feeder Bay. Select Feeder as the origin. Perfrom the trace and all selected features that contain an attribute called Feeder are field calculated with that Feeder number.
Now to make this a much more powerful tool. Place a flag on every Feeder Bay recloser. Perform a downstream trace and if you Geometric Network is good it should select every feature other than the upstream features and populate each of them with appropiate feeder number.
That would be awesome.