What would I do over??
Park the vehicle out of the sun, in a closed garage or at a minimum under a carport (closed garage if live near salt water/ocean)
For long term storage definitely in a dark garage with no (or covered) windows
Never drive the vehicle in a (US) state/location that salts/chemically treats it's roads for ice during the winter but
if you must, wash the vehicle off frequently and (before the first winter) have it professionally rust proofed (not just undercoating)
Dash protector to keep the sun/heat off the dash/crash pad and steering wheel (leather)
Use a windshield Sun/UV shield when parked, covering all windows/glass would be best
Cover the original windshield washer (plastic) bottle with something opaque to prevent cracking from UV damage
Cover the headlamp leveling bubble thingies with something opaque to prevent cracking/deterioration from UV damage
Cover the accelerator cable with something like sections of slit fuel hose or Marine grade heat shrink tubing to protect the original thin rubber coating from deteriorating
Replace the Heat Control Valve, PHH (and the 98 other pm's) sooner
Overall better preventive maintanance to protect from UV damage (fabric/carpet fading, leather and plastic damage, etc)
Rust proof the vehicle from day one, either pay someone to do it right or (yourself) spray 3M Cavity Wax into EVERY nook, cranny, blind cavity, boxed section, cross member, frame sections, rocker panel, radiator support sections, and dog legs. Also into all door, tailgate, hatch, hood, and door pillar cavities, bottom of doors under the weather stripping, under the weather stripping (remove first) for the rear body opening (hatch/liftgate), engine bay, etc, etc, etc, etc And that's even if living in a Southern US State; IME vehicles can rust almost anywhere, it just happens much faster/worse in a salted road state
Wax/polish/seal the vehicle exterior more often including the alloy wheels
Clean and treat the leather interior more often
Never park the vehicle with Ethanol fuel in the tank for more than a few weeks without adding Stabil treatment and filling the tank with pure gasoline
Learn how to work on your vehicle as soon as you buy it so you don't have to take it to anybody else
And never ever never let a young male driver get behind the wheel by themselves because they will try to destroy it (buy them a Heep/Jeep instead)
My two cents