I miss a pure fiber-optic core with fat, round copper exterior. This way you get a decent bandwidth from the FO and nice ammount of juice from the thick copper. Oh, and did I mention it's round, so even Apple users won't have issues with it.Not missing at all. Remember, those round connecter cannot transfer any data, that's why the USB-C/ Lighting connectors are the best.
This of course is just the general idea. Lot can be improved from here on.