• The current implementation renders a deep copy of the selected pods from nodesMap in updateView()

I didn't see "a deep copy". I think you are doing the right thing here, to compute a subset of nodes and set({nodes}).

However, I don't quite understand the gif/code:

1. Your gif doesn't show a "partial view" of the canvas. All pods seem to be shown.
2. The sidebar ToC should be "togglable" into three states (selected, hidden, blocked), something like this:

1. Your gif doesn't show a "partial view" of the canvas. All pods seem to be shown.

It's due to the native multi-selection of tree-view, instead of checkbox-based selection, the selective view happens when there're more than 1 items selected in ToC.

the selective view happens when there're more than 1 items selected in ToC.

Oh, I see.