A minor feature request - but (presumably) easy to implement. The uptight designer (I know, redundant) in me, is constantly closing open items in the Layers panel tree. It would be great if an item was added to the context (right-click) menu, to collapse all children in a given tree node. Thanks!
You can already do that: Cmd/Ctrl + click the collapse arrow on the node you want to collapse. You can also collapse all layers with Alt/Opt + L.