I finally got around to converting some of my single strand (rope light) singing faces over to some new pixel elements and I have to say sub-models are a god-send. It made converting simple and easy. I have several sequences where I have a talking element that uses the standard 8 channels (outline, 2 for eyes and 5 for mouth). I was able to take a pixel element and create sub models for each mouth assignment and then when I imported from LOR/HLS I was able to map each mouth movement to a sub-model of the pixel element. Xlights Rocks!