At this point in Higurashi, Keiichi is really starting to piss me off as the main character, Keiichi being paranoid for almost six volumes gets old, and he really goes insane in this arc.
I really liked how Satoko finally got an arc to herself, she is probably the least focused on main Higurashi character in the series.
This arc focuses on a real issue in life, and that is child abuse, everyone wants to save Satoko and there was a point when Keiichi was argueing with Mion and it was like, DUDE YOU CAN'T DO ANYTHING ABOUT IT, GET YOUR HEAD OUT OF YOUR ASS!
This was a good arc none the less, it provides more mystery to the secrets of Hinamizawa at the end. But i have to say, I'm glad that this is the last arc where Keiichi is the narrator.