While sectored hole filling usually isn't that fun, there are a lot of good cuts in each section and the puzzle comes together well. Can be anywhere from solved to 8 off with the right idea and a bad section, which really makes you think!
Too long to be fun and a lot of intricate cuts sprinkled into the first half of the level. I would be surprised if this wasn't optimal now. This is definitely Pathology's hardest "Long hole level" and a serious contender for hardest level in the game.