I'm very happy with my present JD 3520 power reverser, but some details could be changed, here is my wish list :
. a decent way of using the 3rd SCV, instead of the present lever which has to be held in place (unfortunately I only have 2 hands) or tied with a small chain or elastic band which regularly comes off when you are using it for several hours on end. Why it cannot stay on as long as you need it is beyond my understanding.
. slower A gears for applications needing rpms for hydraulic output and slow tractor movement
. a buzzer or flashing light when I forget the parking brake (quite often).
. a lower ROPS that would fit standard garage doors. More generally, the tractor seems designed to operate in vast open spaces, without walls, garage doors, low branches hitting the lights or bushes catching the hoses under the tractor, etc. An effort should be made to make it more practical.
. a tool box somewhere