The main Chicken-egg analogy is true. There are really very few modules made that would take advantage of the 5V line if it was there anyway. The only workable solution seems to make beefier +12V supplies to handle the onboard conversion. Or as I mentioned some manufacturers should start converting from the -12v to balance it out.
Just out of curiosity - What current modules by what makers using the Doepfer-style bus actually require the +5V
-James
James Husted
Designer, Synthwerks LLC
www.synthwerks.com
james@...
synthwerks@...