I hoard tabs as well, and https://addons.mozilla.org/en-US/firefox/addon/tab-manager-plus-for-firefox/ https://addons.mozilla.org/en-US/firefox/addon/tab-manage

I hoard tabs as well, and https://addons.mozilla.org/en-US/firefox/addon/tab-manager-plus-for-firefox/ https://addons.mozilla.org/en-US/firefox/addon/tab-manager-p... has been a game changer. Let's me move them around within windows, which I like a lot. Let's me create windows that have specific purposes. The tree style tabs never sat right with me mentally, couldn't say why, I want each window to have a purpose.