The problem with hotlists is that you'd have to keep them hidden from the Rekor end user. The police consider a stolen vehicle hotlist to be non-public information. The national NCIC hotlist is not accessible to anyone except law enforcement.I guess as long as they keep the price affordable for the home user, we can't complain too much LOL.
I do know there are some others out there trying to do what you suggested about hotlists, so maybe they are waiting for someone to nail that down and then just buy it from them?
So Rekor (or anyone else) would need to set up a system that is encrypted such that the end user couldn't see the contents of the list. But the framework is already there, because you can't see the contents of the Amber Alerts list. They just need to extend it that to stolen plate hotlists.