This is great and all, but I feel like it would be easier to come up with a bunch of characteristics and then use those to combine to classify planets. For example, take atmosphere. You would have all the different types of atmosphere and those could apply to any type of planet (where applicable). So the basic forms of planet are Terrestrial and Gas Giant. Earth would be a Terrestrial planet with a Nitrogen/Oxygen atmosphere, whereas Jupiter would be a Gas Giant with a Hydrogen/Helium atmosphere. Obviously there are more categories then those two, but those should be enough to understand what I am saying.
If not, then, meh. I don't really care. If I was making a planet I wouldn't be using your chart until after I was finished with it, anyway. At which point, I would shoehorn my way in there trying to find which category it fit into best. And with your system, that could take a while. Just saying.
Anyway, best of luck to whatever you decide to do.
