Hey Brad to your first question. The reality is that there is no real standard in the broader open source community. For example pandas is arguably the reason that python started to become popular in the data community, and it still does not have a 1.0 release.
We/I don’t have particularly strong opinions around when to mark this project as 1.0. It will be a combination of confidence that we have achieved a yet-to-be defined level of maturity, probably combined with some breaking API changes based on lessons learned along the way, and also a quantum leap in tooling based on those APIs.
But to be honest, w/r/t to 1.0 ¯\_(ツ)_/¯ is the reality.