Since Obito will be able to use Kamui again.
What if when Madara reaches him to use his trump card. Obito sends both to the other realm and crushes his eye. This way he traps Madafa6 forever.
Can't he just kill Obito and use Edo Tensei to bring him back to life and then use genjutsu on him and make Obito use Kamui? Then again he would need a body to do so.
Plot too complex. We all know what happens with Kishi's complex plots. They get destroyed in less than 1 chapter.
Nice Plot Tho'