I know this is planned, as I heard it in Slack. But I thought an official FR would be good. Now that I am working on the Readwise extension, it would be useful to store meta data about the import for sub sequential imports. For now this data would need to be revealed in the UI which isn’t so elegant.
The idea would be on each block to basically have something like a property bag where I could store some info, like a last update date and perhaps the Readwise ID for that specific highlight.
The ability to query against these custom attributes would be useful as well, so that we don’t need to walk through the whole graph of all documents (or space, not sure what to call it yet).