This add-on works very well for improving performance, is easy to use, and has lots of customization options. However, one feature that it's sorely missing is the ability to view a tab or bring a tab into focus without un-discarding it. This is a major issue for me because I scroll through tabs to navigate my browser, so I end up loading a bunch of tabs I don't want to load. If there was an option to only un-discard a tab when I click in the tab instead of when I open it, this would be perfect.