Personally i love Backdrops, they help organize the nodes big time, but i think it could go a step further by allowing drawings or images in these backdrops as background.
The screenshot i attached from previous work is an example of how i sort of tried to use the backdrop to look like a figure as that way i quickly know what each node is but it would be even nicer if i could import drawings/ images that illustrate even more what the backdrop contains without the need to read the names.
I think it would help alot of artists to customise the node hierarchy for better navigation.
Then we have the node for notes. I assume thats just for making notes but to really see the text in it, i have to eather view it in layer properties or open the node in new window. I think it could un-collapse and show the whole text inside the node view, saving a number of clicks.