What good would that do? Kaguya can travel between dimensions at will so as soon as she got put there, she would just waltz right out. That would just mean Obito would have to continue doing it forever and he would run out of chakra eventually.
She is in control of that dimension too? I thought only Obito had acces to it since his chakra was still belonging to him and because every person has unique chakra.
Well you may be right and i wrong. Thx for the replies guys! Taken in to account all your words.