Verbose mode was allowed by default. This can be amended by installing WCF OData extensions and enabling JSON Light support, however, in our practice, a rare farm admin considering such an update. So it's better stick with a Verbose when it comes to SharePoint 2013.Minimalmetadata as a default. So the payloads could be a bit more smaller in size and effective overall.Nometadata mode could be tricky, from one hand it's close to Minimalmetadata yet doesn't content some vital information such as entity identities and paged collections helpers. We prefer Minimalmetadata over Nometadata in general.Conf method."Accept-Language": "en-US,en;q=0.9" which forces English messages in responses if English is installed on a site. Which is handy for dev and debugging purposes as sometimes a local non-latin language can be escaped to an unreadable form making it uncomfortable detecting what was wrong in logs.