> is there something on the roadmap for couchdb that would solve our unique key > problem?
There is no uniqueness in CouchDB and I think will never be. PS: I think that will be cool to have a feature to declare such constraints. And mark documents (if constraint void) just like them marked when conflict occurs (doc._conflict). Something like doc._constraints["unique_timestamp"]. Then it will be possible to create a view and retrieve a list of documents with constraints violation.
