I will point out one sort-of workaround or at least a clue to making this work. The shift_Home key will move the cropped view to be over the crosshair. Similarly the Home key will center a zoomed view that is panned over somewhere else. This could be tracked automatically. The plugout_drive command for making controller B zoomed in image controller center the crosshair for the zoom/pan case would look like this (I can't figure out the cropped case keystroke though).
plugout_drive -com 'OPEN_WINDOW B.axialimage keypress=XK_Home'
