The only thing I can think of that I would change about the iPhone is to have the ability to add a layer of full disk encryption. In lieu of that, Good, the makers of GoodLink, have reinvented themselves as the iPhone in the Enterprise front runner in my book. They did this by duplicating much of the functionality of the native iPhone applications, but did so in a manner that stores its data in an encrypted disk image. Communications to the iPhone from the Good servers are also encrypted with similar fervor. And if you have Domino instead of Exchange then you have equal functionality, great for a number…