I'm not sure I understand how the toolbar can solve this problem. Unless I'm misunderstanding, I'd have to reopen the page every time when I click on the icons in the toolbar, in addition to not being able to interact with them in the same way as other tabs (e.g. using the keyboard to jump between them rather than needing to click). It's probable that the developer intent is closer to what you're describing, but I still maintain that what I'm looking for would be more useful for than the toolbar and that I don't personally have any use for what you're describing.

Maybe the difference here is that I don't ever have more than maybe a dozen tabs open total (including the half dozen pinned ones). To me, it seems more that you're using tabs for what browser history was designed for, and that you're using pinned tabs in a way that doesn't make sense unless you are using tabs in that way.