1) the jewel cases for the DVD-A's are too fragile. The hard plastic cracks with the slightest pressure.
2) I've got the Futurama set also. I love the thin paks. They are translucent, soft, plastic so the insert shows on the inside with information/graphics.
3) from my measurement, they are even a little thinner than 1/2 the normal size.
4) I'm running up against storage limits also and plan on going to these. Scan my originals, and photoshop a thinner spine, shouldn't be a problem after a few tries. Given the spine is thinner, I concede that it is harder to read them, but I can still see them with my 47 y.o eyes well enough.
Took me years to go over to the dark side

. I still miss the great big beautiful graphics of Vinyl LP's, but the movies are taking up too much room.