I love the show happily ever after. It is an absolute master class on what a Disney fireworks show with projections can be. Having said that the projections have been pretty bad even before the plaza refurbishment began. This became painfully obvious to me upon seeing Disney illuminations at Disneyland Paris. The projections really popped. It was obviously better projections. And not just by a small margin. Magic Kingdom really needs to fix this. I don't think new projectors are needed out so much as the technology needs constant adjustment, and maintenance that they're just not getting.
Additionally in my opinion only, it did not help when they painted the castle rose gold. I always felt as though it muted the projections when they did that. So the colors became a little off because they weren't projecting on the same color surfaces they were originally designed to project on.