In a sense, a bunch of nodes can be “collapsed” into a macro (through the right-click menu when multiple nodes are selected), but of course this is not exactly the same as “just visually collapsing” those nodes which is what you are suggesting here I suppose?
I could potentially implement your request by giving “Canvas Groups” the ability to collapse/expand. Would collapsing/expanding Canvas Groups be adequate for you?
Gavalakis
