Everyone knows the classical four elements- Fire, Water, Wind and Earth. And many people know what they stand for in the human psyche. Fire for willpower, water for compassion, wind for knowledge and earth for goals and planning. What I was thinking was, in my novel, could I strip these down to just three, and make them human? The Combatant as a representative of Planning and Willpower, the Concubine for Compassion and Emotion and the Spymaster for Knowledge and Learning. Basically, I'd use these- and their RPS symbols (Combatant=Rock, Concubine=Scissors, Spymaster=Paper)- as a theme throughout my novel. The three empowered characters all fit into one of these; rage, skill and technique, respectively. My question is, how far can I push this metaphor; and how much should it affect within the storyline? Should I build the plot around it, or should I plot and then nudge it in when I can? Also, any feedback on the metaphor/RPS system is fine. I'd like to know if that's right.