I know its called Deus Ex Machina, Madara was obviously too strong for NV

I agree! Limbo is too op! Not only It can do that but also the Databook says that Limbo clones have the some abilities like the original!I'll say it again. Madara needed to be substituted with Kaguya for the sake of finishing the Juubi and the manga. Madara could counter the Rikudou Chibaku Tensei quite easily. If it's used on "him" he just switches with a Limbo and the Limbo clone gets sealed, the Yin/Yang marks go back to Hagoromo, and Madara mid diffs Naruto and Sasuke at most. Notice how Kaguya doesn't have any type of clones to avoid the use of the seal? Lol Further proves my point.
Limbo+PS at this form would be formidable!! And the other Rinne techs too. Madara's Susanoo was PS from his EMS form so the real Rinnegan+Sage Mode+ Juubi+Shinjuu chakra would have made it way more op!I really wanted to see his PS in Perfect JJ. He had so many transformations going on both eyes and chakra. If Sasuke's PS transformed immensly I cant even imagine Madara's Susano.