I know you've put all 10 'guilds' on equal footing here, but I think there is an additional dimension that can be added here, which is the allied vs. enemy colours. I've done a lot of thinking about this following your article, and there is definitely a sort of implied harmony in the allied colour combinations (for the uninitiated, that is those which are beside each other on the wheel) vs. the enemy ones, which I believe may lead to a lot more inner conflict. I'm no psychologist, but all I'm suggesting is that a personality based on UR or WB combinations is potentially more unstable. This could be why creative geniuses may also often be vulnerable to depression, and is behind the cognitive dissonance and 'unfair' viewpoints often visible in 'tribal' conservatism as displayed by WB personalities. Mark Rosewater has written a lot about this as well and how there is a definite difference in the amount of overlap and tension between the colours.

The positive thought I get from this is that I personally consider myself to be red/green/blue, and have faced my share of psychological problems in the past. But using this framework, focusing on the 'harmonious side' of my personality (the red/green side) and stepping away from the blue for a bit has really helped me. This for example shows in how practices like mindfulness, which actively encourage you to stop trying to understand/question everything and just to be with emotions/accept things, have really helped me out, while at times i feel that the green/blue parts of my personality pull me in different directions and can leave me very confused about what to do or what to think. I don't know, just a thought.