Hi,
As you may know there are currently two entry points in MediaWiki for javascript that wants to perform certain actions, action=ajax and api.php. Only the following features still use action=ajax: ajax watch, upload license preview and upload warnings check. I don't really see much point for two entry points where one would suffice. These could all be readily migrated to the API. However, this would mean that they will become unavailable if the API is disabled. Would that considered to be a problem?
Bryan