Game length doesn't make a game epic. For example, I found Ocarina of Time far more engaging than Twlight Princess despite taking less than half the time to complete. Truth is, if a game is too long or tries to hard too create a sense of epic-ness (not sure that's a word, but it works nonetheless), it becomes the opposite of what it's trying to accomplish.
It's certinaly possible that Too Human will not be all Dyack hoped it would be though it is his fault for pimping it so hard. If you're going to
brag say that Miyamoto and Kojima taught you so much about game design then your game better be somewhere in the ball-park of a Miyamoto or Kojima quality game or else you're going to look like a jackass.
I'm still looking forward to the game though. I think it's going to be quite good, at least as good as Eternal Darkness was (not AAA, but good enough to want to keep playing to the end).
Anyway, the 2 best parts of that preview:
Eternal Darkness had an excellent camera, which in 2003 was like finding a unicorn.
It's ironic, considering that one of my favorite "sanity effect" tricks that (ahem) Eternal Darkness pulls on you is when the game suddenly stops after a few hours and you see a message that reads something like, "Thank you for playing! Continue your adventure in Eternal Darkness 2, coming soon." Five years later, Too Human does the same thing -- except seriously.