Parity is not bad. In many instances it's nice to have consistent predictions or formula and watch the market swing all around it, snatching opportunies when we can.
It also makes things like my non predicitvie public more valuable, and making ranges of Forecasts more valuable. This can show us just when it's the market swinging, and how much, and not the teams themselves doing the swinging, outside of the more expected ranges of variance.
Keep the teams equal and let the bettors and their non predicitve perceptions move the lines into betting range, where we can strike.