I have a 12" Macbook that I use for work and often have to present at client sites. I have the Apple USB-C to HDMI adapter and it works about 65% of the time. I constantly have to either travel with 2 laptops in the event it doesn't work or rely on co-workers with PC's or older macs. I have two adapters, one for my office and one for travel and they both have the same issues.
I have been hopeful the increased visibility of the issue that is coming with the release of the Pro would lead to a fix but when my Pro arrives this week I have no expectations it is any better than the 12" at first.
That's a really sad indictment of this company lately.
Apple is trying to pass off cost-cutting as forward-thinking. But people are rightfully seeing through it when the alternative solutions aren't as convenient, practical, reliable (as demonstrated here) or even present at all (such as MagSafe and optical audio, both of which I love).
I know it's cliche to say "Steve Jobs would never..." but I honestly believe that MagSafe is one of those things he would've tried to keep. If not as a dedicated port then Apple could've designed a MagSafe charging cable that worked in any of the USB-C ports and bundled that with the computer. But they didn't because that's too much effort or costs too much apparently.
The situation with audio is a joke. If Apple really want to push lightning headphones, how hard would it have been to include a lightning port? It's pretty god-damned slim. They moved the headphone jack from a convenient location (closer to the user on the left side) to just about the most inconvenient location possible for headphone use; as far away on the right side as possible as if they're trying to hide it but didn't have the "courage" to drop it yet. Not only that they removed optical audio (which I use and love) for no other reason than (I guess) cost-cutting.
Also, where Apple used to use the best Intel CPUs with Iris Pro graphics in the 15", they've now downgraded to using the Intel HD integrated graphics, which is, you guessed it, cheaper! The list price of the lowest-end 2.2 GHz i7 used in the 2015 model with Iris Pro 5200 (4770HQ) is $434 per tray while the price of the 2.6 GHz i7 with Intel HD 530 (6700HQ) is only $378 per tray. This may mean the computer has to switch to using dedicated graphics more often or the UI may feel more sluggish before it switches. Perhaps the efficiency of the AMD chips means they can get away with the poorer Intel graphics and the user experience is the same or better but I'd want to see performance tests and the graphics switching in practise before making up my mind. One of the great things about the 2015 model is it still "feels" nice and fluid with battery switching enabled and on battery power, while still getting excellent battery life (8-9 hours). It'd be a shame if that end-user experience went backwards because they cheapened out on Intel chips.
What this all seems to suggest is that cost cutting was needed to make up for the shiny new touch bar and Touch ID while still maintaining their very healthy profit margins. There are many savings compared to the previous model. Smaller chassis means less aluminium (an expensive metal), fewer (and smaller) ports means quicker machining. Simpler display (removing glowing logo) should be quicker and easier to manufacture. Much smaller battery is a significant cost saving. There's the cheaper CPU, loss of MagSafe optical digital and likely many other cost savings. This in order to get a touch bar and associated controller chips, Touch ID, bigger trackpad and better screen.
There are positives with the new machines obviously, but cost aside I'm now in the position where I have think long and hard (and make a decision table) to decide if I want or would be happy with this new version in comparison to the former, where previously I wouldn't have had to give it a second thought because the new ones are just always better in every way.
I've more or less convinced myself through the writing of this post that I'm going to stick with my former rMBP for now and that the benefits in the new model don't outweigh the potential disadvantages, especially as they relate to the choice of CPU, the lack of optical audio and the position of the headphone jack.