_update handlers are great (and getting better!) for building RESTful API's inside CouchDB. One limitation I found tonight is that _update can only do a single document at a time. If the API I'm building needs to update multiple docs (in a similar fashion to _bulk_docs), then an outside "proxy" script is required. It would be ideal to have a _bulk_update handler to allow for the same functionality as _update, but with the ability to insert multiple documents at once.
Perhaps the current _update handler API could be extended to support multiple IDs/documents, but a separate API endpoint would be seem reasonable if needed.
Thanks for considering this idea.