Ok so I just got back from the Smash Fest. I stood in line for four hours to play 2 minuets and watch other people play. And I can definitely say that I can't make a strong opinion, good or bad, on the game.
Only 2 mins, FFA, items, and uncomfortable controller wasn't really the best experience to get a feel of the game. I was unable to test out anything I wanted. So yea, I have no strong impressions either way from the demo. And I don't think I am going to go through that again for Saturday, because it just doesn't seem worth it to do it again for another 2 mins.
I'm going to have to wait for the final version to really comment on it.