(ok, it's not quite /that/ bad, but you get the sentiment)
Maybe make their physical shapes different enough so that you can't connect things which fail catastrophically together?
But if you wan these top Mbps or W, or want 60 Hz 4k video, you may find out that not everything works with everything else, and proper cables play a crucial role, while being visually not distinctive at all.
The only thing it improved over was the hellscape if charging ports.
Myself, I ran into an incompatibility for the first time ever last week in over 24 years of using USB devices. A new Thinkpad with Windows 10 would lock up it's USB bus if I plugged a USB speaker in using the hub on my Dell monitor. Hooking it up directly worked fine. These are all "legacy" USB 3.0 devices with Type A and Type B connectors, and have worked for years with other computers (PC + Mac). What a shitshow USB has become.
There are some cables that show the power throughput [1], I would like to see cables that show data throughput as well.
[1] https://www.amazon.com/Charging-Display-Wattage-Braided-Tran...
And i'm not alone: https://www.youtube.com/watch?v=rDPtcKycQeI