It would make sense to classify the Earth - Moon as a binary planet. Life-as-we-know-it is most likely to occur in binary planet situations, where large tides are the stirring rods that keep the proto-life soups from settling into non-interactive stratifications. Creating the class of binary planet with the Earth - Moon as the prototypical first pair would help focus exoplanetary studies, and also inject new considerations into Earth science studies, such as plate tectonics, geomagnetism, possibly meteorology and climate studies, etc.
As to Pluto: Yep, its a planet. Has been one all along. 260-odd astronomers at a convention of more than 2,000 astronomers have no scientific basis for saying otherwise. No matter how important their foible makes them feel.
[Is this post a good troll? I think it is a good troll. I think it is like a storm surge on top of a super tide, that would stir things up, keep the cauldron bubbling. But in a good way.]