Thanks for your reply. It's good to hear that Tabs Outliner is a favorite for other power users out there. Interesting that you had a great synergy between it and The Great Suspender. I myself hadn't ever used The Great Suspender before hearing about it's recent demise. It sounded pretty useful, and upon looking for alternatives, I discovered the cross-browser extention Auto Tab Discard. FYI: https://github.com/rNeomy/auto-tab-discard