And not every browser has implemented them. Do you have control of the when they are updated, and how often etc? I like the idea though of perhaps just having them as simple bookmarks. That would allow for easy syncing.

Syncing history - could help regarding your reading history (privacy aside.)

Coupled with an 'easy read' mode in the browser (I haven't tried Safari in a long while,) might make for a pleasant experience.

Non of the popular browsers have a good Bookmark UI IMHO, which leads to inappropriate tab use.