I'm surprised nobody's mentioned what seems (to me) to be the coolest benefit of using induction (and excluding connectors/contacts) on the iPhone: no more water damage (right?). If there's no keyboard and the one home key is sealed/touch-sensitive, then you have a (pretty much) water-tight iPhone, or at least a very water-resistant iPhone. Water damage is a big deal for cell phones, and I think (not sure here) it's one of the leading reasons for phone failure (day at the beach, dropped in the toilet, etc). Heck, some companies even put water-contact indicators (white dots that turn red when water touches them, made by 3M I think) on their phones to keep people from using the phone's warranty to cover water-related damage.
And if you're spending this much on a phone, it's a pretty cool feature. Also, wouldn't it be possible for Apple to create a portable version of the charger, maybe using a magnet to hold the end of the cable "in place"?
What do you think?
Edit: Consider MagSafe, for example...Apple developed this and implemeted it for a (while very cool) relatively (although I know people to whom it's happened) uncommon way of hurting your laptop. I think water-damage to your phone is more likely than tripping on a cord and bringing down your laptop. It would be in line with Apple's previous thinking about how to help you protect your investment.