Tom,
I am assuming you are talking about the Rain Bird Rotary nozzles? That is a great idea, however, the Rain Bird version of nozzle is a little different than the MP Rotors. They have a Rotary Nozzle and an RVAN, which act independently from each other.
If you take a look at the links below you will see that the true "VAN" (RVAN) version of nozzle doesn't actually even go to a full circle:
http://www.rainbird.com/documents/turf/ts_RVAN1724.pdf
However, the Rotary series are set at a fixed arc which includes a full circle:
http://www.rainbird.com/documents/turf/chart_RotaryNozzles.pdf
For this reason we have made the system auto download both sets when you choose to use the Rain Bird Rotary nozzle and then allow you the ability to choose which ones you wish to place into the drawing.
Please let us know if your suggestion was misunderstood.