Oh, also need Auto-collapse unfocused tree badly!

This should be a menu option, but not default behavior.

Implementation? Maybe collapsing older trees after a threshold of trees are expanded or simply collapsing inactive trees after a set period of time?

Can you explain what the desired behavior/goal is here?

I think Abu Imir has a large number of tabs (i.e., hundreds), and complexly nested trees. He seems to want to move tabs between two arbitrary locations with ease, IIRC from another thread.

An alternative fix would be to create another icon in the Reddit/Notepad area for an extra tree list. Then, the user would simply drag and drop the tab(s)/tree(s) from List 1 to List 2. (Note that List 1 and List 2 are the same tab list, just in different scrollbar positions.)

This is similar to how Tabs Outliner does it. (Except Tabs Outliner duplicates itself and creates two panels.)