It's nice to see this functionality, but hopefully we will eventually get some form of application communication that's a little more modern, such as the ability to edit the content in-place inside the destination app. (That would still make it 1996-era technology, a la Apple's OpenDoc or Microsoft's OLE2.)

I worked on OpenDoc and I'll be the first to admit it had a fatally flawed architecture and a terrifyingly complicated API. But with the Cocoa GUI frameworks and OS X's fairly robust bundle plug-in mechanism, it wouldn't be too hard to build something roughly similar and much more approachable.