Cool, thanks SG.
Well, my initial post was just me rambling off numbers. We can of course make it more complicated. It should not measure the Cost, but the STRENGTH of the persons deck. I made Quantum Pillars/Towers cost more than Mono Pillars/Towers because it is a well known fact that on average, Rainbows can have a lot more diverse playing technique (using a lot of different cards) - making it harder for your opponent to guess what cards you are using. Whereas, a Mono Aether (in the Example) is pretty easy to read.
I could just be over-complicating things. But I think there needs to be a difference between a cards Cost and it's derived Point value or Strength.
In your example, 60 Dragons, no pillars. That deck would theoretically score very highly in Points... Maybe someone more mathematically inclined than myself could offer an equation which works out the ratio of pillars to creatures/spells/permanents and generates a point value for each pillar that way.