I really hope they show more, maybe some actual gameplay and a proper discussion with Aonuma about the game.
Like others have said, I wasn't expecting to see the first ~40 minutes of Xenoblade X, or to see such honest gameplay of Hyrule Warriors.
If I'd been asked after the reveal but before I got into the Treehouse streams I'd have said no, but now I'm not so sure. I think that first snippet could have been there to get us talking and then towards the end, have more a gameplay/story oriented look at it. Something showing off the range of locales and perhaps give some idea of what the gameplay may look like, like this one: http://www.youtube.com/watch?v=VE2Dc1sx71U
I know it's cliché as all hell to point to the TP trailer, but I think something like that; that gives a bit of insight into what the game will be and a title, would be plausible (and sweet). Could be the last thing they show at E3, get those last headlines coming out of the show.







