It's an interesting idea but missing vital features for me. For example, the star in Chrome tells me that I have bookmarked this page in the past so I avoid having duplicate bookmarks even after editing the name. The standard synchronization also makes it easy to bookmark a link on my phone and then deal with it once I'm back at my computer. Now I would have to figure out a way to somehow download the URL as a file on my phone so it syncs to my computer. The favicon is another neat thing to have on bookmarks.

Somewhere along the way it just feels like a backup makes more sense.