Hm. Detail I'm wondering about: A Doll Judgement adept can channel his maneuvers through his dolls, but can he channel his maneuvers if they are Ancient Temple maneuvers? They can only be done with youkai blades and your dolls don't have them.
Must they have youkai blades of their own to channel them or can you use your maneuvers and just channel their effect through the dolls, since you are the puppeteer and you technically are the one initiating them?
If you want to channel them through an immortal/special doll, is it the same? Mostly because I don't think they can die of old age and get the Netherworld Gardener feat themselves. Unless we get them the Alternate Form monstrous feat at 1st level to have their true form changed to an animal or humanoid one, which can perhaps qualify.