I don't know if others have a need for this but I think it could be useful.
While having a FurryVNE in window mode, it can get crowded while having many open tabs open in the outliner. https://imgur.com/a/cYQ6Ey4
This makes it hard to navigate so I suggest while double-clicking the tab it will close all the other tabs leaving the active one open. https://imgur.com/a/BpgMF1m
I don't know if this makes any kind of sense, I tried to explain it the best way I can.
Tell me what you think about this small chance.