this is a general purpose idea really
I have designed artnet nodes for led panels and having the ability to readdress the panel would be a lot easier as you dont have to get to it
i used the Dmx workshop extensively for testing nodes and it is a very useful device a mac version would be nice.
I've used Pandoras box before to drive led stuff but a previous project i did ran on catalyst and i was very impressed so now i am a catalyst convert

Chris