How about a slightly different twist on the console theme.
I had a bad habit of taking normal consoles and turning them into monitor consoles.
John Wendt was the "king" of this type of mod and sold PM1000 modules that had 8 rotary pots in place of each channel's linear faders. He went on to consult on circuit design and noise reduction for Ramsa/Panasonic consoles, among others.
I first saw a Stephenson Interface mixer when I workd for Bearsville Sound in 1974-75 and I later mixed many shows on the monitor board they made when I worked for Sun Sound Audo in NoHo MA, 10 years later and as part of our C rig.
In about 1976 I came close to having a console made by two electronic design guys who set up shop in Waterbury CT and later went on to design for Acoustic (as in: bass amp systems).
There was a small handfull of sound companies out my way that modified Tascam Model 5 consoles for stage monitor duty. Not very good.
warning: slight swerve ......
The first time I ventured far enough into the "big time" to use (other than every now and then) a very well designed/made monitor console was when Sun Sound bought a TAC 40x12 stage monitor mixer that had just been shipped from Great Britain to Hartford CT. I drove our 22' box truck down to pick it up and, as we prepared to get it into the truck, I noticed the sound of things rolling around inside the crate. We cracked the crate open, removed the large cardboard box and found that they (TAC) had poorly attached the beefy rack-mount power supply (in its own box) on the inside of this box. It had broken free and over the duration of its trip the power supply had slid repeatedly around and "shaved" off evey single rotary control (and being a stage monitor mixer, there were lots of these), not to mention denting some of the metal work.
100% trashed. Covered by insurance but they took 6 months to come pick the carcass up.
Major bummer !
But the power supply was in pretty good shape ;-)