This is going to suck.
This is going to suck.
I'm really hoping this is just a transitionary period and soon all USB-C / TB3 cables are created equal. When type-A started being used for charging there was a time with similar inconveniences.
Meh, that problem is still there. On top of how Apple has their own take on signaling that the charger is "dumb"...
It is one thing for things not to work if you plug them in, but when shit gets broken by doing so then that's just inexcusable.
1000BaseT requires 4 pairs though (all 8 wires) whereas you could run two 100BaseT runs on a single Cat5 cable (great for adding a second drop without snaking a new wire through walls). 1000BaseTX runs on 2 pairs but requires Cat6 or better, but it doesn't matter because nothing you'd ever run into supports 1000BaseTX.
10gig on copper is likely different and I don't know enough about it to comment aside from how it's really uncommon in consumer-level gear right now. I believe a 4gig over Ethernet standard is coming soon which should be a good middle-ground.