You can send in feedback requesting the widget and giving reasons why you want it. Upto staff whether they add it though, however they’ve not added any of the other widgets or other suport thats been requested yet so i woulnt hold your breath
Are you aware that the 5 badges you have at the top of your sidebar could all be contained within the same text widget? I’m thinking that if placed them all in one text widget instead of separate text widgets you would then have 4 more to work with. I’m also thinking that if you reduced the size of these badges/images they would take up far less space in your sidebar.