Time for an update while I'm refining the PCB layout. Here is the first draft of the front panel. Its 18HP wide, and I confess I'm not a graphic designer!
The four input jacks are on the left. Then the CV pots and the Sync mode switch. Next column we have the Frequency controls, LEDs, and the manual Shape control, Finally, on the right are the five output jacks.
I need to experiment with knobs and refine the layout, but I think its quite a clean layout. The intention is to get this screen printed or perhaps Metalphoto'ed.