Here is a basic chart of what I've come up with so far, based on responses in this thread:
Code:
Arms: Potentiometer or Encoder -> Hard to zero(?)
Elevator: Encoder
Flywheel: IR or photoelectric sensor (Hoping to find some good options for this, a bit scared of using the cheap sensor on high rpm flywheels)
Stops: Hall effect.
Intakes/Hoppers: IR