Tsunade surviving frankly makes no sense. If Karin's blood can heal that effectively then why did it take Sasuke a chapter to recover before? If Obito could use Rinnegan techniques like human path, why didn't they just kill Yamato and get intel on the alliance and Naruto's movements? Obviously Yamato knew the plans.
If Obito could use Rinne Tensei, why didn't he bring Rin back? Why would he use Mokuton against Naruto but not Kakashi? Why not send his body parts to the real world when fighting Kakashi? Why not use Shinra Tensei to smash Kakashi's face? Why compromise the enter plan and war? Why not sacrifice the Rinnegan eye and use Izanagi? Since it was Madara's, and Obito knew that, it must also have an EMS form.
Sorry guys, but plotholes are holes.... Bigger than that Wind Hole in obito's chest. Shitty writing is shit.