Similar to what was fixed in version 0.1.4 the island is bigger and it contains some grass besides a 25x25 landfill square
There are other islands with biters and worms.
There are demolishers on Nauvis (and their areas)
The "Lava Mech Armor" is VERY slow, I assume this is a bug.
I am using no other mod besides Space Age, with Factorio stable (2.1.23)