[vbezhenar]

There's one simple thing that Apple could do. Do not delete local data if user bookmarked page from that website (or pinned it to home screen for mobile devices). Now bookmarked website treated like an "app" with slightly less restrictions and some random website data will be eventually purged (although I believe that 7 days should be extended to few months).

[diegoperini]

This is a great idea. Long forgotten bookmarks now has a purpose. I wish someone pitched this to all browsers out there.