They were certainly listening to complaints--the most significant things were the improved door seals, the much improved starter from the earlier cars and the change to the gas line to minimize vapour lock.
My favourite car would be a 53 Dragon, with every single option available and possible, including the rear window wiper--except I'd order two wipers , and the air defroster too. Let it be that lovely maroon, that is so elegant with the gold trim, the Marie Nichols interior, and the vinyl rooftop
Second would be a 54 Manhattan 2 door in Australian Beige over Sabre Jet Blue, or SJB over AB, with 3 speed and overdrive, retrofitted with the 53 front sheet metal, and 53 interior, and the 53 Dragon's gold trim...in other words, a 54 Dragon
Third would be 54 Manhattan 4 door Traveler, ditto everything.
I have had a 53 Manhattan, and for me inside and out it was IMO the peak of the design. The only things I would add to that design would be the supercharged engine, the wraparound rear window and the Safety-Glo taillights of the 54-55. They should have stayed with the 52-53 main taillights too, and not bumped themout further.
To my eyes, there was a flaw in the 54-55 front end design. I LOVE the idea of the concave grill, as I love the 54 Darrin front end. However, the hangdog bloodhound 'eyes' of the headlights just look completely wrong to me, and give it a sad, tired, 'face' just like those awful Buicks. I think that the headlight surround was a big mistake as that ellipse, and it would have been much better, and easier to mimic the 54 Darrin front end a bit, by making the shape a very elongated slightly concave on the lower legs triangle, with the lower point at the Darrin's parklights.