I would also love to see something come with a modern USB-C port, but I suspect we're not going to have any of that anytime soon because ANT+ and Bluetooth are simply so universal right now. Everything from cadence sensors to heart rate monitors use them. If someone made a USB-C smart trainer today, either they'd have to get other software (Zwift, Trainnerroad, etc) to support it, or have the USB-C interface simply be some sort of wrapper for ANT+ to play nice with training software. And even so you'd still need ANT+ or Bluetooth for the other sensors (heart rate, etc).