I think we now know why Hashirama was the first Hokage, not Tobirama. I like his personality even more now, from carefree and forgiving, to being able to stop his brother in his tracks with just a glance (and raised chakra levels.) I think that "Shut up, brother" from last chapter has been negated.
Apparently, Minato does still retain his memories of his chakra soul in Naruto. And Tobirama knows how to break free from the jutsu. That answers some questions, and just goes to show that Kishimoto WILL explain things, so give him time before murmuring.
How is everyone sensing Hashirama's cells? Is Hashirama that much of natural force? And lastly, the most interesting thing in this chapter is something that seemed almost insignificant. Orochimaru's real reason for trying to destroy the leaf.. what is it? They skipped over that quickly, but that is a very important topic I think. I give this chapter a 5.