Have a Single Editor Type for Nodes

I'm thinking that when more and more node editors are added switching between each might become cumbersome. This is why I think it might be better to have a single Node Editor that then you can switch between Shader, Geometry, Texture, etc. I put together a quick mock up to show what I mean.

Some drawbacks of doing it this way is that if you want to switch from a different editor type to a specific node editor, there would be two drop down boxes that you would have to change vs the current single drop down box. It would also mean that users might not know what happened to the Shader and Compositor.