I've been thinking baout making a change to the DoublePlay/FourPlay cal switchers. The way I setup the board, it can be either a Double or Four just by a solder bridge. The biggest cost and PITA for me is adding the switch/wires. So, I'm thinking I can offer them at a lower cost and make them user-configurable. Basically, you have to add your own wires/switch and set the solder bridge for whichever configuration you choose (Double or Four-play).
But, I thought I'd get some feedback first. Thoughts?