A future release might support im/exporting of smart rules. However, many smart rules can’t be shared - e.g. those searching only in a database/group or moving/copying/replicating to a group or searching for a specific tag as the rule is basically useless without the required database.
I suppose I was thinking of general principles for the community to share. Take for example Hazel and Keyboard Maestro there are some amazing things people have thought of that I would never have come up with myself.