Actually, I think that's built in to Lightroom.

That's fair. The greatest loss if flickr were to go away at some point would be that a lot of content would be permanently removed from the Web. And flickr's scale is such that I can't really imagine something like the archive team being able to copy flickr content and archive it in a useful searchable way. I may be wrong though.

Given that there are functioning businesses in the flickr vein, I'm reasonably hopeful it will continue on though. Even if that's wishful thinking on my part.

Then "Origami" was supposed to launch and solve that - but they shut down before they could even go live!

I agree that galleries of some sort would be a great addition. I put a lot of photos up on flickr so they're available to myself and others. But I'd like the ability to showcase a more curated collection.