In the interest of Linden Labs' marketing approach in saying that all content belongs to the users and therefore LL does not deter users from bringing in-world assets into the real world, whether for personal use or for exchange, I personally would like to see this hype demonstrated technically. I think that it would be great if binary assets could be transferred over XML-RPC to/from external servers.
Let me say that this should be done STRICTLY on the client and not on the server in the initial exchange, and from there it should be handled in the same way uploads are currently done from the client. (I don't even know if scripts even run on the client at all, do they?) But I would appreciate it if script could send and fetch the binary data of attached notecards, sounds, textures, and perhaps even prim modeling descriptors, all of which should already be marked as "copyable", to/from XML-RPC servers. (Note that XML-RPC does support binary transfers in base64 encoding.)
This would open a whole new can of worms both legally and technically, perhaps, but I'm curious as to what would happen negatively.
But as for the positive, to be honest, I could imagine this opening the eyes of technologists everywhere. "The World Wide Web and HyperText meets 3D space and entertainment in a way that has never before been seen." Yes, this would result in Linden Labs losing some of its control over materials that would be stored on the server. But it would also allow us to manage backups when Linden Labs servers puke, as well as transfer our assets to/from web sites and other resources where Linden Labs' tools prove insufficient.
I can just see Linden Labs shaking their heads right now, "no way", but really, why?