@agentms I've been working on a cool limited worlds mod, here's some progress that I have!

@jab125 Looking awesome!

How are you handling the End? Also, do you have any sort of "balanced seed" search?

@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.
@agentms I've improved generation massively since before!
@jab125 Looks like a much smoother transition to the world edge, great work!
@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.
@jab125 Nice! Is there a "Reset End" function too? I can't imagine one elytra would be fun for multiplayer.
@agentms I don't have a reset end button, but mods such as Legacy4J do, also, here's a map of the end generation!