What about garp? He is currently raiding hachinoso and probably destroying everything in sight, are they going to allow that???
We know aokiji, van auger and that flying horse are alongside TEACH so they are prolly the ones going to accompany BB in kidnapping seraphins.
Since elbaf is the land of giants, i would say that TEACH gonna send shiryu, Pizarro and that giant Guy there.
That leaves Vasco shot alone to defend hachinosu vs garp? Doesn't make much sense...