After the horribleness that was re-watching Thor Dark World, I decided to give the original Thor another shot. I remembered the main story and how it interacted with the rest of the MCU but I had forgotten most of the plot.
Having now re-watched it I have to say Thor is a much better movie than Dark World. It has a coherent plot and a consistent tone. It has characters that are interesting and who's motivations are understood. It's overall a good introduction to Thor.
I don't think it's a great movie, but it's somewhere in the middle of the pack for MCU movies. I was pleasantly surprised to find it better than I remembered.