A fairly common use case in our non-otel-cli-instrumented code is:

1. Open a span
2. Do work
3. If a failure occurs, record it as an event and then set the span's status to Error
4. Close the span

I don't see a way to modify an existing background span via the cli commands, maybe span could have a new subcommand, modify, existing, or status? Or, although not as flexible, span end could take span's optional --status-code/--status-description flags, since a caller could reasonably store the outcome of their background span and set it at the end.

Alternatively, this might already a feature and I'm not finding the way to do so 😅 If so, would appreciate an example.