A sensible thing that Apple can do is unify ALL devices they produce into the Thunderbolt 3/USB-C standard. Macbook: replace second headphone jack. iPhone: replace lightning. iPad: ditto. The donglegate loses a lot of steam if they do that. If only because you could actually connect your iPhone 7s to your Macbook Pro 2016 or rMB without buying an extra cable (which is HILARIOUS) and use the same headphones that came with the phone with the MB.
Macbook: 1/2 x USB-C
Macbook Pro: 2/4 x USB-C
iMac: 4/6 x USB-C (21" vs 27")
Mac Pro and Mac Mini: what are those comtupers you speak of? iPad Pro! etc.
Plus a series of three iDongs designed by Jony's intern Asok. Air, Mini and Pro, with differing slots and capabilities. it would be ideal if you could somehow attach them to at least the iMac without having an extra cable and box around (Magic Connector or whatever this is called?) Add the possibility of connecting an iDong to iPads and iPhones – nobody's going to lug around an iPhone with an iDong hanging from it, but you can boast about your you generously allow your customers to add a microSD card to an iPhone for only €99.
If you want to be courageous, Apple, put your entire weight behind USB-C. Not scatter it randomly around some machines, sometimes replacing it with a headphone jack, sometimes Lightning and sometimes FireWire.
As for TouchBar I am torn on this. Because if they want to reposition it as the cheaper machine, which I expect, there's no way it gets TB (especially as rMB Escape Edition still exists). But DO they want to make it cheaper? Apple now produces fashion products, and it is well known fashion world has money.
The iPhone is along more popular than the MacBook. However, unifying would mean replacing iPhone lightning with USB-C (and not replacing MacBooks with lightning). Reason being simply that the computer/Pc world will not adopt to Apples licences lightning proprietary standard.
Now to move from lightning to USB-C, Apple would lose tonnes of revenue from selling this licensed port.
Now what would be the benefit? Not much because, although there are some users who use both an iPhone and MacBook, realistically, this is less than 1% of people. To lose out on all that revenue to convenience a small percentage of users isn't going to happen.
Second, you risk pissing off all those users who have lightning adapter accessories. It's one thing to piss off the really small MacBook crowd with port issues, but to risk it with their prime selling device? I don't see it. No way.
So on the basis of profit and playing it safe, they won't make this unifying change that I believe they should. I hope they surprise me, like they did with head phone jack removal - but then again that did was open up a revenue stream with the advertisement of wireless W1 chip headphones via Beats/Airpods. If I learnt anything in business, it is always exploring changes that can add a revenue stream to your business, and the headphone jack removal did just that. No one else can compete with W1 chips if you're an iPhone/Watch/iPad user.
I don't see any revenue coming from going from lightning to USB-C, rather huge losses.
Same applies to iPads and why I don't think they'd become USB-C anytime soon.