:lol please refrain from making me use the S4 here.
Tayuya's Sound Genjutsu + Kidomaru drill arrow one shot both Temari, and Kankuro. Fact.
Except if she uses her sound genjutsu Kidomaru is caught as well so this Combo is fanfic. Temari could still blow her genjutsu away while Gaara blocks the arrow for her.
On Gaara's behalf, Sound Genjutsu would act as a simple interruption. Yes, Shukaku's chakra would in fact free him, but all it would take is Kidomaru's drill/Tayuya's ghost to take him out. On top of if we want to factor in Jirobo lifting a mountain-sized/large structure to wail at Gaara during a timed stun (Tayuya's Sound Genjutsu).
S4 has too much synergy. I can argue for Gaara too, but I won't because everybody is riding him.
:kk:
Sound genjutsu is never getting off when he has Temari as back up plus they can take to the skies via sand clounds. Sand Tsunami flushes all the sound 4 away/down and then their crushed easily..