Thanks! Actually I already built Option 1 (JSON files + compare command), just haven't published it yet. Will be in the next release.
But your comment made me think about Option 2 more - exporting metrics to existing monitoring stacks, OTel/Prometheus. For teams already using them, that might actually be "dead simple" since there's no new tool setup or learn.
Btw, the previous version didn't detect EBS volumes attached to stopped instances. I just released new patch version for that.