@agentms I don't have a reset end button, but mods such as Legacy4J do, also, here's a map of the end generation!

@agentms I've just modified the end to have 4 islands surrounding the main island, which at most 4 end cities generating, with one guaranteed.

@agentms I've improved generation massively since before!

@agentms Right now I am using a seed preview mod to see if the world I'm generating is good. And only the overworld and nether are limited right now, but I'll try working on the end once the overworld and nether are at the state I want them to be at.