many other node based softwares have it, but Maya still not: Backdrop nodes to sort everything nicely, to move a bunch of nodes around and to comment.
Please consider after many many years some basic UI improvements for the Hypershade, which is the main tool for look development.
I have copied screenshots from the suggestions of the Node Editor - the same applies for the Hypershade.
(And actually, it would only need one good Editor, that can do the tasks of both Hypershade and Node Editor - the difference would be then just different layouts and panels.)
Backdrop nodes let you organize way better
(Here a comparison between Maya and Houdini what it means for working with nodes)
same for the Hypershade
example from Nuke