I am assuming that I will continue to make single-occasion icons, and that I will probably not delete them if I've got enough space. I expect Dreamwidth to be around for a good long while, so I think that 500 would last me for a while.

However, I do think that there will *need* to be a better icon mangement system in place. The one that exists now is kudgy at 150 icons and I doubt it will get any better.