I set the max distance a little too low. If there's a way to do it, it might be nice to be able to change the various parameters of biter expansion that the new game GUI lets you set. Min expansion distance, max distance, min time, max time, etc...

That's a good idea! Though then the mod name "Toggle" would no longer apply but perhaps that's not a huge issue ^^

Nicest would be to have a GUI where those can be set, rather than /commands, but adding a /command for it would be the easiest. I'll try to have a look at it when I have the time (currently away from home during easter).

The mod "Change Map Settings" is good for fixing issues like that one, and has a GUI. It can be safely uninstalled after making changes, too.

(I guess technically it can do what this mod does as well, but I'm a fan of this one having just a little shortcut button to toggle it.)

Thanks. That's very helpful. I haven't tested to see if the changes will take hold, but I'm hopeful. :-)