Please consider this idea for FireFox. There are times when I want to open all inactive tabs at once. Primarily to determine if I want to bookmark or save content and only then, close said tabs. There is currently a way to delete all inactive tabs but not to open all. Right now I have to go into inactive tabs and tap on each tab. The tab then gets thrown over with active ones and I take my next step. Doing that for each and every inactive tab is time consuming. The interface I’m using is on iOS devices.