So, I stared at the above picture for quite a while last night. In my head I was saying "THIS should go here instead. THAT should go there...". Which means I adjusted the layout this morning. Here's where I stand. I will explain what switch does what starting from the left.
I should mention that the stomp switches you see are placeholders until I get some toggle 3pdt in my next Tayda order (still waiting for it to hit the US), but the footprint should be the same.
All the way on the left is a 3pdt to select which power supply is the "active" one. If you look above I have terminals and a regular DC jack. The switch controls which one I want to use. The third pole is for a LED indicator telling me which one is active/on. The dpdt next to it throws the power to the rails (I think ground will always be "active" on the board instead of severing the connection). THe next 3 controls are all related to the right power rail for the breadboard. THe middle dpdt will select whether I want to step down or step up the voltage. The left knob is the step down section and the right rotary is for the step up section. The two switches you see in the middle are for the test probe. The 3pdt will sever the connections to the audio output and the right LED meter and throw them to the dpdt before the empty space. THAT switch will control whether I want the probe to test audio or voltage and will have a LED indicator.
All the way on the right is signal active/bypass with LED telling me which one. This was a needed upgrade from the protoboard itself.
That empty section toward the right is for a potential signal/wave generator to act as audio input for testing. I say potential since I still need to test a few schematics and see how they work with my speaker and simple breadboard fuzzes, boosters, etc. I'll need a small rotary switch to complete it, but that may be a future Tayda order.
The 2 LED meters will show how much voltage will go to each power rail on the breadboard itself. I've got extra real estate space on the platform itself, so I may throw a more permanent component tester on there. The transistor box is just to show off a goodie I have and to see how much platform space I'll need.
In the event the power test probe isn't very accurate, I will most likely install that black speaker terminal all the way on the left just for ground. I can throw the DMM lead in there and test away. The audio probe terminal on the right isn't dependent on another device to make it work since it's just a simple wire with a cap thrown on it.