There is an invitation to comment on two standards for ECM over at "Enterprise Architecture: Thought Leadership".
Leveraging RSS for ECM is fine, but you'd probably want to take a look at layering in some Atom if you wanted to provide any sort of half decent functionality beyond simple notifications of new content. I'm a little surprised to hear that ECM vendors don't already support this. You'd think it would be trivial to implement something on top of their existing proprietary APIs (or not). Maybe there just isn't sufficient market pull in the enterprise space to justify building out the feature at this time?
The second idea is that ECM vendors should support WebDAV to upload files to an ECM repository via drag and drop. Judging by the CMS Matrix, most products already support WebDAV. Doing drag and drop against a WebDAV repository has been around for quite some time - best known examples would be Microsoft's Web Folders, and WebDrive.
Depending on what you are trying to do, these "standards" can be just the ticket. Which reminds me of the old adage: "The good thing about standards is that there are so many of them."