Apart from customizability, security and decoupling of UI changes from API/perf/security fixes: - Option to stop all audio/video in all tabs - Lazy session re

Apart from customizability, security and decoupling of UI changes from API/perf/security fixes: - Option to stop all audio/video in all tabs - Lazy session restore - Reliable "save for offline viewing" - Decoupling of "read later" from bookmarks and a separate interface for both Going wild: - Automagic unloading, archiving and clustering of opened tabs, perhaps with an auto-extraction of TL;DR from long articles I very often open lots of pages (from HN etc.) but have no time to read them all at the time of opening. They linger as background tabs until the background tabs count is so big so I have to close them all and probably never come back. Would be cool if the browser was able to somehow unload and archive unused tabs (to free some memory), and perhaps automatically group them into several categories: say, "angularjs", "bash", "youtube", "news" etc. and provide a good interface to return to them later. However due to sheer amount of links I follow, my problem might be unsolvable :)