That's interesting I hadn't thought about the JSON angle! Do you mean that you can actually use jq on regular command outputs like ls -l?
Oil is an interesting project and the backward compatibility with bash is very neat! I don't see myself using it though, since it's syntax is very close to bash on purpose I'd probably get oil syntax and bash syntax all mixed up in my head and forget which is which... So I went with nushell because it doesn't look anything like bash. If you know python what do you think about xonsh? I