This Could Be What Apple's iPhone 5 Looks Like - Mac Rumors
Should be getting on with work so here is a diversion...
What would I like ?
Near field technology - thus your iPhone becomes your creditcards and small change, plus if Apple did banking then they would tell you how much you would have left in your bank account ( on your card). NFT could also act as small change not to mention a set of keys. All easily wipeable and replaceable if it gets lost or stolen.
Keyboard recognition - let the system look down see the fingers on a table and let it track them to make a 'virtual keyboard'. Nice for typing longer messages without dictation.
Pen - some kind of narrow stylus recognition option. Apple don't have to make a stlyus just the option for one.
More sensors - squeezing the case, temperature, magnetic field. Each new sensor generates many new opportunities for new Apps to the as 10 to the power of N where N is the number of sensors.