This sounds awesome. It would be really cool if you could configure it so that identifying biases actually helps you to win by some tangible measure. For example, if figuring out a bias just meant that person stopped playing with bias (instead of drawing a new bias), figuring out biases would be instrumental in winning. The parameters could be tweaked of course (if people typically figure out the biases quickly, you could make it so they redraw biases several times). Or you could link drawing additional biases with the drawing of epidemic cards?

I have this terrifying vision of a version where it is biases -- not diseases -- which spread throughout the world, and whenever a player's piece is in a city infected with a certain bias, they have to play with it...