@JAck, I'm not even sure that removing Usb and hthe headphone jack is because the hardware is better, heck certainly not on the proprietory headphone jack at all, it's greed pure and simple, to cut down the number of third party manufacturers of apple hardware and make sure people are forced to buy from Apple themselves or from someone who has had direct license from Apple to manufacture apple products.
Then again, this is Apple's thinking all the way, look at the "Itunes or bust" mentality for even trying to work with media.
As usual though it's a case of look at any potentially good things from the device and either live with the bad or work around it.
For me, since I abandoned any idea of my Iphone cooperating with my pc at all, the Usb thing doesn't bother me, however the headphone jack is quite the irritation, since it'll mean carrying spare pairs of earbuds around with me as of course what works on aple's devices won't work on say my Victor stream. That is certainly a point against the so called upgrade to the Iphone 7, though whether there is any practical good in the thing that compensates for this irritation I'm not sure.
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)