You want the fog back after verifying you have acceptible resources. They just told you how to have the same map with fog. Whats the problem ?

Sorting a list of a thousand item stacks would only take a single ms. itemstacks are not stored as a series of individual items but a single stack object that knows its item type and item count. Its highly efficient.

Thats utterly NON realistic though. DC voltage cant transfer long distances efficiently, which is the reason public electric networks are AC. That, and the fact that generators naturally produce power in AC, not DC.

Whats the point in making items that are super power intensive if they're not forcing you to build out your power infrastructure? Just making "god power generators" doesnt feel very satisfying.

Instead of always choosing grass as the new land type, why not choose the type of land that is at the players position ?