since some top-level nodes are editable, such as those in the Code Catacombs, it might be nice to be able to flag updates such nodes as significant in the same way as can currently be done with home nodes.

in addition to providing a way for alerting users in an effective and non-cluttering manner to updates in node content, if extended to reply nodes as well, it could avoid some of the conflict experienced lately as a consequence of users alerting their nodes in a "contraversial" manner post facto.