Don't load all tabs when restoring window (or when starting up browser for first time, or when restoring a window/set of tabs from history)

Don't load all tabs when restoring several tabs in any way (Restoring window from tabs outliner, Browser startup Restoring a window/set of tabs from history/recently closed)

Worded differently: Only load the active tab when restoring 2 or more tabs. (Don't load the inactive tabs)

Would like to pay for a firefox version. Would also be happy to work with you on making a Tabs Outliner 2.0, I've written like 12+ chrome extensions, writing javascript for 7 or so years