hey Mark, I'm just checking in on this thread after being out of the loop for a while, so sorry to hear about your health troubles. Hope your road to recovery is short and well-paved!
I'm throwing in my 2 cents to vote for Pinbot ramps...translucent blue into red would be incredible, though just blue would be very nice as well.
Also I just restored a Rollergames and the ramp entry was pretty badly deteriorated. You can fix 'em up with fiberglass resin (thanks @vid1900!), but it would be nice to have the option to replace. I'm sure it would be pricey, given its size, but it would be a nice service to the hobby. I'm amazed at how fast and fun that game is; I'd never played one that was really playing nicely before!