In 4.9, we got at+MMB to pan and alt+RMB to zoom in the animation curve editor, it would be amazing if we could get an option to enable this for ALL orthographic views, using RMB to pan is an odd choice and is still very annoying even after using UE since 4.0!
So with 4.17 we now at least have MMB in in all the graph views, - the setting is in an odd place - Preferences/Graph Editor Settings/Panning Mouse Button.
This is super awesome but still need the final step to be the orthographic views in the scene view.