I have a tendency to read the OP and just that post and that's it. Thank god you caught the mistake of your ENTIRE THEORY xd
But honestly, yeah that really is the entire counter point to your theory and I was going to show that page. Kisame clearly thinks Tobi/Madara/Person controlling Yagura AKA 4th Mizukage was/is Madara. Not really much else to discuss on that point.
About the Edo-Tensei. I made a thread about this but I can't find it, it was awhile ago. Anyway my whole point was wondering why the Edo-Tensei/IWR was not used by the Allied Shinobi Army. It has to by only a couple of reasons and logical ones at that. 1: Honestly no self-respecting shinobi in any of these villages would grave-rob or steal DNA. MADARA HIMSELF even comments on the fact that it (Edo-Tensei) was known as a complete atrocity:
(Not to mention he obviously is upset/pissed that he was brought back in that fashion/with that technique because he thought he would be brought back probably with the Heavenly Life Technique).
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2: Adding on to the first point, since all of the 5 villages are in the Allied Shinobi Force, who are they going to Edo-Tensei? Their own relatives or someone from Konoha is going to use someone from Kirigakure's DNA and be allowed to get away with it? I don't think so. It would be like if Ao knew how to perform IWR/Edo-Tensei and brought back Kakashi's father, Sakumo (Who was a very, very powerful shinobi and said to be more powerful than the Sannin). Point: It would never ever be tolerated or allowed since they are all in a pact.
3: This one is the most complicated one but also the most important I personally think. Why it is complicated is because we have to realize a couple of things. Edo-Tensei/IWR is a KINJUTSU. It is not allowed to be used. Yes it was originally used and created by Tobirama AKA the 2nd Hokage, BUT (Here comes the next point of the theory) he had to have known something about the technique that I think Madara alludes to and here it is:
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Look at the first thing Edo-Madara says. That doesn't sound like something positive is coming for Kabuto or anyone who uses the Technique. I think Tobirama knew long-term use of this technique would cause a high-level of catastrophe and even if it doesn't, even USING Edo-Tensei would be counter-intuitive to having an Allied Shinobi Force. If someone brought Jirayai back, you better damn well believe Naruto is going to kill everyone from that village