I was hoping for a new original IP, an update of a series other than Animal Crossing (Pikmin, F-Zero, etc.), a successor to the DS, things like that.
I've kind of forgiven Nintendo for E3 now. They've already said "Sorry hardcore gamers, but we simply were not aiming this years E3 at you". They haven't said they are abandoning the hardcore market, they simply said their goal for E3 was not to represent this side their business plan. And it wasn't just Nintendo who had a disappointing showing, they are just being singled out because they are always expected to razzle and dazzle at E3.
Look at what they did unveil though. A chuffing microphone!! Thank you Nintendo! And the new motion peripheral is a good idea. Critics who tried it at E3 said it worked really well, and hopefully it can take us further away from tacked on simple controls and leading to a more original gaming experience.