This one has a whole bunch of... less than ideal fill, let's say. I guess it's due to theme constraints and the two Js in the revealer. At the very least, everything should be crossed fairly.
I liked it — thanks so much for posting! Clever theme (I think the shading was key) and a good mix of clue difficulty levels. 50D was my favorite clue; felt like the clues for 17A and 37A were a tiny bit off.