OSM has the notes feature which sounds like what OP should have used

> Example of a valid and useful note can be "a new road was constructed here" or "this shop is closed and does not exist anymore".

https://wiki.openstreetmap.org/wiki/Notes

Yes, the data source is clearly useful, so not having it is a loss. But an edit is large enough a privilege to require all these checks.

Perhaps it's not that OSM that needs a signal, but perhaps it's that there's an opportunity for an open map that has many signals, of which OSM and Book Corners are examples.