What COTS parts would you like to see?

[JesseK]

Originally Posted by Monochron

If they can't get away from the ring design of the walls, maybe make the walls a little larger so that you could tap and screw it back on after it pops off? It's doable right now with (I think) a #4 screw, but something larger would be nice to work with.

You could tap the base aluminum pulley, close to the ring, and use a washer to retain the ring. This is similar to how many gearboxes retain bearings (AM Toughbox Nano, WCP DS gearboxes, and a few others I'm sure).