I actually enjoyed this a lot more than I thought I would.
It's interesting to see a Madoka video that isn't "IT SUCKS TO BE A MAGICIAL GIRL! ANGSTY ANGST ANGST!"
Only complaints I've got would be the super zooms around the beginning were a bit over the top and worked against the melancholy "slow me down" atmosphere, and the flashes at the end were unnecessary. Ending was a bit sudden and kind of "wat?" but not the worst I've ever seen.
But yeah, while not perfect, good atmosphere and interesting take on an overused series.