Sakurai stated that he's attempting to slow the game down in Brawl, likely because Melee was too fast-paced for casual players. Keeping wavedashing wouldn't help to slow it down at all. Moreover, wavedashing didn't make the game "better". It actually helped to create greater gaps in the tier list, since many characters become much more effective with wavedashing, yet others practically don't have one and suffer for it. Granted, SHFFL'ing is infinitely more important than wavedashing, but still.
Marth will be a bit crippled without his excellent wavedash, but he'll cope.
Oh, and only boobs play with Marth. ARE YOU SOME KIND OF BOOOOOOB?
Uh not sure what u mean by boob but you do realize that (arguably) the best player in the world uses marth (ken). If boob means kikass…thanx