Actually, now thinking about it...I that late mandatory release will be a bit too hard-hitting. You only get one pokemon an area, and only three pokemon in your main party. If you aren't actively getting pokemon, that thing will cripple you; especially in a gym/Elite Four. I think Drohn was already stating that only three pokemon at all times is extremely hard.
I think that should be optional, I'll gladly accept it and ask Drohn if he wants to, but I think it would just be too intimidating for new players attempting a KnightLocke. (This is if more people do accept the KnightLocke).