Changing the damaged doors and wing is no different to someone changing them because they're rusty imho. No reason why, if the repair is half decent that the value should change at all... especially if not done through insurers
Agreed Al, if I do the work myself (which I dont have the facilities to do) or source parts, do some myself then have it finished in a Shop.
Unfortunately, Ive had a local quote for both options, first option was a non starter, second was doable, me finding replacement Door and sourcing a rear new panel (as we discussed) and letting the Body Shop to finish off. Biggest cost being the Panel and Man Hours for the Shop to repair and then blowing the side of the car to match the paint job.
The second option is doable if I was to decide to keep and drive the car myself, but means I'd be driving around in a car I paid more for than what its worth.
a 100% match for color is very hard (requires many trials painted on a test card with clear coat) but blending the color coat (with a close color match) on the front door half will be practical and very hard to see even for a trained eye..
if I were you I would repair it.. because its a slow speed damage.. I dont think there is problem on the main chasis rails..
edit : I re-check the car picture and front left wing and front door color is already different.. so its better you paint the whole side 
The car is on its original Panels and Paint, so will look again as to different shades

, but yes, You, Me and the Body Shop Man are in agreement probably easier to blow the whole side in while the Guns out, just means a tad more expensive and prep work but it gets done properly.
Question for me, is do I throw in the towel now and cut my losses, the car was a project, a new home for someone, vs whats it worth in bits? and get some money back on her.
