What is your wishlist for a new browser interface?

Browsers today are not made for the kind of browsing that I often do: playful surfing. When I say playful surfing, this XKCD strip comes to mind: https://xkcd.com/214/

I'm doing an open-ended exploration on what I'd like a new browser to look like, and the workflows/modalities I want it to unlock.

Pain points:

- Navigating a flat list of tabs feels like a chore

- Tab search only indexes title/url, not the content - If I have 50 tabs opened, currently on tab 35, and remember a vague term I read in one of the 34 tabs before – How do I trace my way back to it?

- Bookmarking should be tag based, not folder based

- History is siloed

My wishlist:

- Tree-style tabs sidebar (like the Firefox add-on)

- Full-text search over open tabs with ability to narrow down on specific sub-trees

- Interaction-aware search ranking. For instance, if you scroll 60% of the way through on one tab and then search for a term that existed at the 55% mark on that tab, it should be show up first.

- Tag based bookmarking

- Built-in annotation tools & Google-docs style collaborative marginalia

- Timeline-based history (Inspired by https://maggieappleton.com/historical-trails)

- Bring your own sync server / self-hostable sync server

- Everything gets saved to a SQLite database, so you can plug it into your own home-made tools

What features would you like to see in a new browser (interface)? What workflows would you want it to unlock?