Regarding the Zodiac, the idea is indeed interesting, but just imagine what things you'll start calling the computer if you lose the final battle in Tournaments only because, during the week of the Snake, an enemy hero bearing the sign of the Dragon receives an initiative bonus? Heroes already sometimes feel too much like a roulette wheel, and here that similarity would become even more apparent...
Regarding the Zodiac, the idea is indeed interesting, but just imagine what things you'll start calling the computer if you lose the final battle in Tournaments only because, during the week of the Snake, an enemy hero bearing the sign of the Dragon receives an initiative bonus? Heroes already sometimes feel too much like a roulette wheel, and here that similarity would become even more apparent...