If purification is still -3 corruption for 6k perika? That happened on version 0.32.0 I believe. Just over a month after the notion of using the festival to shed corruption by deliberately converting max hp into additional purifications got posted in the community. Apparently Richard decided that kind of lateral thinking wasn't allowed.
Furthermore, I consider that NG+ options for +[ally stats] or +[ally starting exp] should be added.