You should probably read more into it. The GamePad adds to the experience (backpack, sniping, scanning, etc), and the concept of "one bite and you're a zombie" followed by "you need to hunt down your previous character to get your items back" is pretty cool imho. Your death makes your enemy stronger. If you continue to die in the same area without killing, you're just making it that much more difficult.
That and I love how it appears that the developers actually created full-on characters with backstories to inhabit the world, such as the kindergarten teacher. I hope there is a way to explore those backstories and piece together what happened to cause the outbreak. I think I remember reading something about the outbreak happening at the Summer Olympics, which is also... pretty cool - the idea of playing a game about recent history and seeing it played out as if zombies had been created. I just see some crazy potential and some already established quality from what I see in the videos. If anything, it will be a solid survivor horror experience.
[edit] yay! ZombiU defense force! I'm kind of amazed (and pleased) this game has amassed a loyal fanbase. I really do not see a Red Steel situation here. I had a horrible feeling about Red Steel after the previews and videos I saw, and this game is the complete opposite. For Red Steel, it was the promotional videos that hyped me up and the gameplay videos that made me question it. For ZombiU, every video reestablishes my faith that it will be a quality title.