Some powers have almost no demand in Trade currently e.g. EGGY, STONEAGE, CUBOID, CATNMOUSE, PONY, etc..
EXAMPLE
MINING and CATERPILLAR used to be LIMITED and had barely any demand costing from 30 - 50 xats each. Since these powers turned UNLIMITED the price increased to 130 - 150 xats each.
SUGGESTION
Make some of these powers UNLIMITED to not only increase the demand of these powers but to enable these powers to be used in ID auctions also.
Let me know your thoughts!