A tangent on logcat - local observability to me is a really intriguing area, I think there's a story of Otel for local as well if someone can build a good enough local DX for consuming them (we've been told a number of times about this https://github.com/hyperdxio/hyperdx/issues/7 as an example)
* When browsing locally, I'd be able to see spans that never closed (because they were super long-running and/or because the process crashed mid-span). I suppose for the latter case, the otel collector could upload them (marking them as incomplete somehow) when it knows the process shut down.
* When looking at events(/logs), I'd be able to see the current state of all the enclosing spans, including their fields. Easiest to do locally, but ideally also in otel. Maybe some mechanism for automatically copying select attributes from the span to the event for use in otel (details tbd, whether it's selected in code at span creation time, tweaked in the otel collector config, or what).