Drilling isn't a problem, I've got a press. What bothers me is 2 things:
1. I'm doing my panel without any exposed bolt heads. I'll either drill a hole in the underside with a forstner bit and set the bolt into the bottom of the panel with some thickened epoxy; or recess the bolt heads on the surface and fill the hole with wood filler. So what holds the plexi in place? I could glue it I guess, but then if I ever want a differant underlay I'm FUBARed.
2. Swappable joysticks: Sticks mounted on peices of scrap panel so I can switch out the 8 way for a 4 way, or a rotary, or whatever. Plexi is just one more thing I have to worry about fitting properly so it doesn't look crappy.
I wonder if a few dabs of epoxy would hold the glass down?