Future proofing I don't know about, but a few simple things can be done to improve your chances during remote area travel.
1. Get to know your car. What situations can cause problems. For example, my D1 has issues with bulldust getting into the door locks. So a pressure pack of dry lube is part of my kit.
2. If needed, get a diagnostic tool for your car and (importantly) learn to use it. Even if you can't fix something on the side of the road, knowing the problem can save you a lot of money.
3. Carry a copy of the workshop manual, paper or electronic (RAVE if it's applicable)
4. Top level membership of an auto club, for when things go really bad.
5. Membership of forums like this one, where you can benefit from the experience of others.
6. Phone and / or email details for known good parts suppliers (like Roverlord) that will ship anywhere, anytime.
7. Probably most important, get to know the limitations of the vehicle and tyres you have to work with.
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1999 Disco TD5 ("Bluey")
1996 Disco 300 TDi ("Slo-Mo")
1995 P38A 4.6 HSE ("The Limo")
1966 No 5 Trailer (ARN 173 075) soon to be camper
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