Well, sure only 1 port seems pretty insufficient (at least for the moment), but wireless connectivity is something Intel is pioneering, not Apple. It seems to me Apple has created a design to push the industry towards what Intel already envisions: wireless display, keyboard, mouse, network, external storage etc connection, even wireless charging.
The only problem I would personally have with this one would be not having an Ethernet port or at least a USB-C to Ethernet adapter (yet) as I wouldn't be able to use this thing at work. But having to plug Ethernet to whatever portable device I bring to work already feels like a pain. It's not that wireless networks are less secure then wired ones, it's just that whoever can setup a wired network becomes an IT guy nowadays and companies are not knowledgeable enough to invest in a full wireless setup, or get rid of all the cabling they paid for in the last 30 years. It does bug me a little to bring a fully portable computer to work and plug in many cables already (owned an Asus ultrabook with dongles/adapters). I personally never owned any Apple computer but have to admit I am thankful Apple exists and does push the design limits. I don't mind trying one of their designs in the future.
As for the people expecting USB-C type adapters & accessories to be super expensive: sure the ones Apple will sell will be horribly expensive, however let's face it: USB-C is not patented by Apple like lightning or thunderbolt ports so you can't get some silly error message for plugging in a third party adapter in there. I do expect many USB-C type accessories coming out in the near future from third parties.
Also the processor...I would wait for the next version of this "MacBook" but hey, I am not in urgent need of an ultraportable for the moment.
TLDR; ahead of it's time in design (and perhaps little too much ahead in usability), behind in power