Hi BryanSk8, it's me the "friend." Since your playing MW3 right now I'll discuss against your post
I say no, because though it may be true they made a mistake alot has to be considered. If Hashirama had Kept the Bijuu to only the leaf it could be easily depicted that the other village would become envious of one village having so much power meaning that instead of multiple villages fighting everyone would want to end the leaf. it has been depicted in history that anytime a nation grows to rich in power tragedy follows fast and hard. It could have made the leaf end up ending every other villages history or genocide for the leaf. His plan was to disperse them to grow faith with in each village having each other have the same power. I would place blame on those who misused this power. Plus it made it harder for the akatsuki to gain them. So though it was a misused judgement it was probably the best thing that could have been done.
Tobirama on the other hand is harder to debate. It was a very poor judgement that could have saved a genocide. The only thing I can say is no one could know if Tobirama deep fear could have been well placed for some. The reason i say this is who is to say that some members of the leaf could have fueled the revolt to happen faster. I say this only because as human being some of us fear the unknown meaning there fear could have caused fights between them mistreatment and envious of the supposed great power. It could have ended up butting heads to the point of no return. But let me say that is a speculation, we will never know. If everyone was like Kushina and Minato we wouldn't even be able to speculate that it was a bad idea but there werestill members of society that only fear the unknown proof being Danzo and the dumb advisors. So it was a Mistake but I have a theory on whose truly to blame.
The guy that crushed Obito's body. You see if Obito wouldn't have been injured he could have been there to protect Rin for himself and maybe knowning the truth behind that story of kakashi and killing Rin. Which Lead to his revolt on the leaf which lead to the death of Minato and Kushina. Who I truly believe could have solvedthe situation between the Leaf and the Uchihas. He just Didn't get enough time.
I am not discrediting your thread its a well thought question and even though I am newly back to this forum I have much respect for you InnerSakura. I woukd never make a joke of any of your threads.
So to summarize I truly believe in the cas of Hashiram Senju he did what was probably best for his situation, even though the beast caused war it also prevent the any foe from easily getting his hands on them for the Juubi because remember Madara was still alive and he was preventing a terrible situation. In the cas of Tobirama Senju his is truly a harder case to defend and there is a better option then what he chose but whos to say that it wouldn't happened no matter what. He was prejudice and made a bad decision but with people like Danzo out there whose to say it wouldn't have been forced in other ways that lead to more death. I believe that no matter what was decided that bad was still to come because trials must be passed before peace can truly be found.