Like what? Massive clock and weather widgets? Want them to ape metro, just because? It's ultra intuitive and works. Seriously, what kind of change would you like, and what's bad about it? Whatever change they make will need to be reflected on iPhones and iPods, because the overarching theme is consistency of experience and interface. I've heard alot of bitching about the iOS launcher, not a single real, well thought out suggestion of what it should be improved. Also, do you spend your time staring at your home screen? 98% of the time I'm using an iPad, I'm inside an app.
Yeah, I don't understand it either, my use of the springboard/homescreen is transient, I leave an app generally knowing where I want to go to next, navigate to it, and launch the next app. Are there just so few apps for other platforms that they spend all their time on the home screen? It makes little sense to me the complaints about the springboard.