The title pretty much covers it, when you cntrl click several tabs, when you go into keep tabs, and its underlying options, you only have the ability to keep tab which is the tab you are currently on, rather than all the selected tabs, adding this functionality would make it much easier to manage what tabs you always want on and what tabs you want discarded if unused, I am not talking about the firefox tab group functionality but it would also be neat if something was added for that.