As promised, V2 of the “What Should I Do With This Shadow?” decision tree

We get the question at least a couple of times a week: "Should I purify this shadow Pokémon?" Well, I've developed a decision tree to help anyone struggling with this question to figure out the answer that best suits their own situation. This is the second version, with multiple improvements from my previous chart, implemented with help of r/TheSilphRoad and r/pokemongo