But I bought my Wii on May 2008 so Brawl was already out. I wanted to buy one when I saw Mario Kart Wii in stores. I was like OMG! I so much loved Double Dash!
For the hype, a delay of 3 or 4 months is really okay.
I think Nintendo don't want their games to have a big opening then drop dramatically. They want money on a long run.