I work for a company that has a web based system that monitors oil and gas wells. (Lots of similarities to network monitoring.) Anyway, we have a device page, similar to your node details page. I would like to recommend adding the ability to access a drop down box on the node details page, that would allow you to select other nodes. This would allow you to quickly select another node and navigate to its node details page without having to go back to the main page and select a different node from the tree.
I have attached a screenshot from ours. When you hover over the down caret symbol next to the device name (ADAMS 16-9) the dropdown menus appears.
Thanks. That's a great suggestion.