I’m still waiting on some proposed resolution of the notification issue. The concensus-building of having multiple curators vote for a taxon change is useful and I support it, but without a notification system, that creates a dynamic of requiring the OP of a proposed change or subsequent reviewers to solicit (more) votes. Having some type of notification system of a proposed change, based on some metric of number of observations or identifications of relevant taxa, would grease the wheels towards achieving any required vote threshhold.
For example, a notification might be automatically sent out to the top, say, five Identifiers of a given taxon that a proposed change has been posted. Just one notification once to up to five Identifiers, no more. No notifications to subsequent voters or commentors unless they were @-ed. A notification would be targeted ONLY to the taxon subject to the proposed change but no higher or lower taxonomic levels–that could result in massive numbers of notifications.