Unfortunately the springsUI package hasn’t been updated for 2.0 yet and I’m not sure it’s worth updating it. The problems it was trying to addressed are better handled with a dynamo view extension, than with hijacking of a node model, from a coding point of view.
However John Pierson’s Monocle view extension is a cool & funny way to list all of the included packages in the graph and more and you can get it from the package manager.
Another thing I noticed in 2.0, is that the *.dyn file now includes a list of graph dependencies as custom node GUIDS:
Maybe that’s something that can help with detecting missing nodes too.