This 'type' of car has not made it to the end before, eh ?
So these guys should have a good few pointers as to what
went wrong or failed, and have solutions to all of them ?
Other than that I would have advised them to have fitted
'spring assisters' and even gone oversize (profile) on the tyres
to give them a bit more ground clearance for the potholes.....
and....I would have suggested a 'mild' remap, with the EGR
'mapped out' to save it going into 'safemode' as that is quite
a common problem for diesels.
With knowledge from the previous failures and those few additions
the car should or would stand a good chance of making it.