Hidan still needs to eat/drink/breathe as far as I know even if suffocation and starvation would be significantly slowed for him, and trapping him at all is pretty close to our wincon against him. Sasori has organic components (brain+chakra system iirc) in a life support system somewhere in his main puppet body. Unless he's defied medical science (possible), his last organic bits' life support needs should include oxygen. Not as much as a full-sized human being, but not too much less, either, since the brain is pretty resource-intensive as far as the human body's total needs go. Similarly to Hidan, being able to trap Konan entirely in one place is a pretty nice setup for spamming MARS at her or whatever the plan is. Forcing Kisame to reverse summon and stay on the Seventh Path for a week or so is pretty nice if we need to do something like kill his partner or fuck with whatever he was doing on the Human Path at the time. If he doesn't reverse summon, he might be able to break out but I doubt he oneshots runic force dome, we can still laser him.Some of them don't need to breathe (Konan, Hidan, Sasori) others can't be trapped (Kisame, Itachi) seems like the only one who'd be inconvenienced by this is Deidara, their least threatening member.
Itachi is the only one where I think he probably could escape entirely, true, with his esoteric techs and whatever he got from Conjura. Every other Akatsuki member is at least inconvenienced by being trapped in a specific area, whether or not they would suffocate quickly.
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