There are two schools of thought when it comes to rankings: Ranking by Price Point, and Ranking by Kingdom types. Both have their pros and cons, but the pros of the price point rankings far outweigh the cons of ranking by kingdom types. However, there is a third system, which myself and jsh have wanted to do, which is a tier system. Forget all of these difficult ways put certain cards over there or over in that corner, and just rate them based on strength and utility alone, in a vacuum. We don't have to worry about prices and what goes where, because they're all card shaped things.