Eliminating entropy seems a good idea, except no one's biological or mechanical processes would work anymore, and light and heat wouldn't radiate. A stagnant, dead universe... interesting that the Dimension of Entropy and a universe that had eliminated Entropy resemble each other so. Difference would be that Dimension Zero would really have no one and nothing, while a realm that lost entropy would have a lot of lifeless, frozen stuff, locked in stasis. Kind of interesting that time is considered the opposite of entropy, and that chronal monsters often have either cold attacks, or temporal stasis attacks, considering that the effects of eliminating entropy and time freezing someone are identical.