OK - Example:
I want to specify a set of component video baluns to 8 different locations. Some of those locations will need multiple sets (for a TV & Blue Ray player), and each balun in the specific location needs its "mate" in the core.
So I enter one balun in room number 1. I then hit "duplicate" and the screen pops up. I can then put one balun in rooms 2-6, two in rooms 7-8, and ten in the core. Presto - the baluns for the whole project are taken care of.
Also - there is no down side. You wouldn't be REQUIRED to enter a quantity - it could default to "1" (like it does currently).