Wonderful to look at - story has problems *SPOILER*
Very, very nice to look at. Totally worth watching just for that. The story has a few problems, and I don't care if someone wants to call me retarded before I have even posted this.
1) Why didn't the little guys, at any point, just move farther away? What was keeping them there? They didn't seem to need food or anything from the 'hood, so why not get the heck away from that factory thing?
2) SPOILER:
The plot walks right up to: they should put those souls back into the bodies. But do they do that? They had the technology. Heck, that's how they got into their bodies in the first place. But no, instead of that, the story takes a decidely sickly-sweet turn and, well, you saw what happens.
How was that outcome actually any different than destroying the machine, really? That would've probably made them really dead too, I suspect.
Still, wonderful to look at though.
"Dude, it's Lord Goblin King, not Lord Go Blinking!"