The biggest challenge phone developers have is how to cram everything into a tiny form factor and providing the correct balance of 'stuff' vs. battery. Apple takes this to the extreme with relatively small form factors. When you look inside of a phone one component stands out in terms of the space it consumes vs. the relative value it provides: The 3.5mm minijack. It is obviously important to connect headsets to the iPhone. In fact I prefer connecting a wired headset, even for hands free calling, over a Bluetooth unit. But if we could use the space the jack consumes inside for other things (a slightly larger battery maybe) I'm all for it. So my question is, would you like to see a MagSafe style connector for the headphones, assuming it would lead to more space internally for other features or larger battery? Compatibility would be the biggest issue, and an adapter (like Replug has today) would be required.