I really, really wish Apple would add multitouch gesture support to the iPhone.
I feel like every time I push the home button, I'm one press closer to a half-broken home button like I had at the end of my iPhone 4's life. It basically didn't work. I'd have to press it hard or multiple times to get it to do minimize a window and opening the app tray thing was a crap shoot.
The jailbreak app Zephyr was a savior in that way as I could just swipe up to close an app, or swipe from the bottom to open the app tray. Unfortunately, there is no iOS6 jailbreak atm. Still, with how well zephyr worked...and even how well gestures work natively on the iPad, I'm just wondering why we don't have a home button-saving set of iPhone gestures yet.
Home button weakening over time is almost the singular reason why I'm considering buying an extended warranty.