iPhone comes with a USB-A lead, so you'll need a USB-C - Lightning lead to connect it to the new MBP
I've just counted and just with my MBP sat on my desk I'll need at least 4 new leads/adaptors (HDMI, SD, at least two USB-A for my printer and SSD), and with one port needed to power the thing I'd be swapping things about quite a bit.
Yea sure, that's a lead though not a dongle. Buying a £2000 computer and worrying about a £20 lead seems a bit strange. Other than charging which I think most people do via the mains socket anyway there isn't much need to plug an iPhone into a computer these days. I just think people are moaning about the wrong thing. The fact the 15" with a large hard drive costs just under £3k sounds like a bigger frustration to me.
I was going to get one, I assumed it would be £2k, not for the highest spec of course, but I don't want a 13" screen. The price is just too much when there's nothing wrong with the current (now previous) models and I can pick up a used one in really good condition for well under a grand. Sure the new one will be 151% faster, but so is a sports car over my family car (probably more but you get the idea) in reality I don't need that power, and most people don't either. They manage just fine with the current systems, which are much faster than previous systems, and so on.
The touch bar isn't just a gimmick, I can see a lot of use in it - I'm betting most have just looked on the website and read what people have said. It takes time but go and watch the launch. It's not just a short cut, I think it's going to be appearing on every computer in the next few years. In the leaked pics before launch I thought it just had a few options that changed in the middle, I didn't realise it was a retina display that showed video and could be used as a scrub bar, could be used to show previous saves of an image in photoshop, would change contextually to every screen in an app and could be customised. To those saying 'just learn your shortcuts' you really haven't seen the video and have no idea what it can do. It's not a gimmick.
What they've got wrong is the price and the ports, they are good ports and the fact each can charge the laptop is good, but it's going to frustrate people that they need new leads and a hub in a lot of cases. I just don't agree with the dongle thing, buy a lead not a dongle in most cases. For many people of course it won't be an issue. The ports are not a problem for me, my printer is wireless and fast enough that I just don't plug it in to anything, I wouldn't have an external monitor, I have no desire to plug my phone into it but if I did I'd buy a lead. That leaves charging, if I get one I'd also have an external hard drive, that may come with a lead, if not I'd get one. No huge deal and enough ports for my needs. The price though, that's painful. I'd rather save close to £2000 and get a new camera!
However the laptop will sell in huge numbers, it won't be a flop although many want it to be, and the world will keep on spinning. It's the way Apple do it and always will - premium prices and making changes that everyone thinks they couldn't live with. Ultimately people do live with them. Removing floppy drives, CD drives and then DVD drives and never including BluRay were all huge deals, much bigger than a lead need issue, yet people somehow manage without a floppy drive even today!