Yes. I really hope that Brawl has a new style of play; granted, it shouldn't stray too far from the basics of the game, like double jumping, edge grabbing, and smashing. Adding/Removing certain aspects of the game (such as shielding?) will give the game a whole new style of game play.
If you want a game that plays just like melee, then just go fucking play melee! I'm personally looking forward to learning a new style of play, along with having lots of fun with all the old/new characters.