Support DbContext as a EF provider context
Right now it's too difficult to use an EF Code First DbContext as an EF data service provider, see http://social.technet.microsoft.com/wiki/contents/articles/5234.aspx. It should be as easy to use DbContext as ObjectContext.
This was done as part of the WCF DS 5.0 release. http://blogs.msdn.com/b/astoriateam/archive/2012/04/09/wcf-data-services-5-0-rtm-release.aspx