Well well well... Having played this, beating the story, and watching all the cutscenes again, I must say that this game certainly answers some questions about the story, and raises many more interesting questions and theories.
Hmm, I remember saying a few theories a few years ago, and while all those are still proven true, there's much more meat on it now.
I could speak for a while on this, but
Spoiler:
Harada is to be commended, he somehow managed to paint Heihachi somewhat as a sympathetic character despite all he did. Although his reason for sealing Jinpachi beneath Honmaru still escapes me.
Huh, people may ask me a lot about how my old theory of the Devil Gene has changed with much of these new revelations. But, I'll answer this a little later when I have organized my thoughts.