Neat, and works well for the toy example with 4 tabs open. I don't really think it would work as well for the "tab collectors" as they think. They seem to be aware of this too, since none of the screenshots in the post have anywhere near what I would consider a significant amount of tabs open. I use the tree style tab extension on Firefox[0], which I cannot live without. Horizontal tabs become useless after about 15…
I would agree with you here. I don't understand why tabs, bookmarks, and history aren't just merged into one feature. History needs to be less ephemeral, but more easily editable. Then you could add some sort of ctrl-p style fuzzy search that includes both url and content, as well as a knob that dials up or down the number of visible tabs/history items, and they'd fall off with disuse. You could pin some to the top o…
A properly designed framework would make it really easy to just save a "session" (tab sub-tree for one purpose) for later, sync it, or archive it.