Upping this one.

Anyway to get access (and modify) to world's seed, freq/size/richness control settings from a mod at runtime?

Details...you asked for it :) You can easily change starting resources, every record of "resource-ore" or "resource-liquid" can have starting field: starting={richness=2000, size=17}, The generator tries to make sure that at least (richness * size) amount of ore or (richness/2) a...

. Attention: This mod has been replaced by a successor: https://forums.factorio.com/forum/viewtopic.php?f=14&t=12412 This mod overrides in-game Perlin noise based resource/units spawning system by region divided spawning system. In short - distances between resources become much longer. To make ...