This is my take on a remote control for the MPCNC.
The joystick can be used to quickly manipulate all three axis, and the touch screen is then used for fine adjustments and for starting CNC jobs.

This has been tested to work on a Ramps board.

Joystick: https://www.ebay.co.uk/itm/253529802489?ul_noapp=true (JH-D300X)
Touch screen: MKS TFT32 Touch Screen Controller
Firmware: https://github.com/Allted/Marlin - My board is a Ramps board.
The code for the joystick is in the firmware already but have to be enabled in Configuration_adv.h (#define JOYSTICK). In order to get the calibration values (M119) for your joystick, #define JOYSTICK_DEBUG has to be added.

Hook up guide and loads of useful information on the joystick controller can be found here: https://forum.v1engineering.com/t/joystick-managed-by-marlin/10863/62