I agree with the views here. any outfitting to do real expedition work (which means fully self supported travel over long distances) needs to include the ability to do ECU diagnostics and resets, and replacement/removal of non-essential electronic components that would disable the vehicles (e.g. swap out air suspension with coils).
Aftermarket DIY computer aids like the Amigo and that other one built for resetting the air suspension made for Range Rovers (can't remember who sells that right now) are good examples.
Overland Journal (or was it RN) covered a RR that did the London to SA trip with minimal mods, so it would be helpful to understand what their real intent is. Posermobile for photo ops (the look), 90% paved travel with occasional light offroading with self sustained camping comforts (the norm), or completely hardened for extended off road travel where self-recover and repair is critical (the core).