Ctrl+Shift+Arrow to expand/collapse whole subthread
Apparently there is a feature already in evolution to fully expand a collapsed thread but it's just not called from anywhere.
I'd like to propose a keybinding and/or context menu item for this, even though there isn't even a context menu item currently for any thread expansion.
The keybinding could be either of
But I think a context menu item is also important so that people don't have to figure out that there is a keybinding for it.