I have the impression that new photos can create a higher attractiveness. The color itself will find its lovers. I remember the Plus4 SS were also seen in light blue. But in the photos the color looks like faded on the fenders below the door. It makes the car look very used. I would have someone in your circle of acquaintances who is an amateur photographer and has a good camera take new nice photos in different light in a nice setting that has more to do with the driving experience. The roadster looks a bit out of place in the cow meadow.
It has already been said, the detail shots of the steering wheel and chrome are not very attractive. The interior could be staged very advantageously in better light. The Series 1 dashboard in particular is an absolute highlight in my view. The cream colored instruments could contrast nicely with the blue in the right light.
Your description sounds very serious and honest. People want to hear stories. Maybe a sentence about how long you've had the car or how few previous owners, maybe a princess was a previous owner? Just kidding.
Seriously, I think your car has more sales potential with better pictures.