We also have COW filesystems now. If you need large datasets in different places, used by different projects, etc, just copy them and use BTRFS or ZFS or whatever. It wont take any space and be safer. Git also has multiple ways of connecting external data artifacts. Git should by default reject symlinks.

Powerline is so leaky it is basically wireless with wires. 14x3 is not a transmission line, but it does effectively turn your whole home electrical system into both a transmitting and receiving antenna that just happens to talk to it’s self. It’s an engineering nightmare.