It's the dawn of a new year, so let's take a look back at one of the hottest-selling phones of the last one. A low-key launch couldn't dispel a summer of hype for the handset: Apple went for evolution when we were expecting a revolution -- even though we'd seen the same with the 3G/3GS. In the cold light of January, we can see the 4S for what it is: a refined experience that lacks a compelling reason to pay an early-upgrade fee. If you were in the planning meeting for the iPhone 6 (it's a hunch), what would you be pushing for? Built-in NFC? Would you have kept Siri under wraps until it had left beta? Do you resent the existence of any phone that can't run Android? Constructive and polite suggestions in the comments below, impolite ones should be written down on a piece of paper and sent to the usual address.