I don't know for the big brothers, but maybe a controller for the player. A small 5 footswitch to control the rig selection and looper. While fx I-IIII can be controlled with the four combo buttons. Touch screen also will be present to access high and low cut and out Eq during live events.
Total size off course is still smaller than the stage. Complete cost will be maybe higher, but I would definitely buy it because more compact as solution.
The only thing the Player would miss at that point is the presence knob 😝