You should make Pedaltrain style slat-boards with custom finishes and sizes... Those are great designs, they simply are limited. If you made lightweight and personalized boards like that, I'm sure they would enjoy some popularity.
I'd want this:
-Small, lightweight Pedaltrain-esque sizes
-Custom Tolexing/Wood options (to match my Plexi)
-very slight angle that can be determined by the buyer (maybe a few angle choices)
-A flip-up pedal platform that exposes the inside which has an easy way to hold a power supply and cabling
-An inlaid loop switcher (programmable if possible from like the Cusack)
-Small slots about an inch wide and 4 inches long placed throughout the deck of the board to tuck cables into
-Locking Neutrik jacks (as many as needed) with male/male adaptors to plug pedals into them with no soldering
-A retractable cord like on a vacuum cleaner in different lengths built into the board
To be honest, i don’t want any new features. The Pedaltrains work fine for me. Added extras like in/out jacks, loop switches, custom paint and so on are just more things to get dented up and broken at gigs.