It's not clear that you read the article, as it describes several devices like that, and the whole point of the article is the somewhat obvious point you're making with the rest of your comment.
Ah, I think I understand now, thanks for clarifying. Though I'm sure one will be made, IMHO I'd much prefer a dongle. My ideal dongle would have AC adapter + USB + Gigabit tthernet + HDMI + 2-3 USB ports all in a small package: a docking station over a standard USB connector.
The USB C connector carries two logical USB interfaces, to have more ports than that you're going to need a USB hub in there was as well, and all sorts of mess trying to get USB 3 speeds to actually function properly.
One port is not enough when that port is used to charge the device.
You can't even use a logitech mouse unless it is bluetooth capable!
EDIT: Something like this: http://media02.hongkiat.com/zendock-cable-management/zendock... just smaller and with two ports.