Any output that I'm going to hook up to is going to have an HDMI connection, and I would bet strongly that that is going to be the case for at least a decade.

Any output that I'm going to hook up to is going to have an HDMI connection, and I would bet strongly that that is going to be the case for at least a decade. And I've got dozens of perfectly good HDMI cables kicking around. As far as power, my understanding is that generally only a subset of the USB-C ports on a device will be rated for full voltage charging. If there's a power cord with it's own port, then you can't screw that up. You can also supply more power than the USB-C standard is rated for, which is nice if you have a real workstation rather than a lil 13" ultrabook. The ideal would be that any old port can do anything, but I'm not holding my breath on that being a reality.