This is GeZi World II, a kind of a GeZi World, the next generation.
Reminds me of Robert Heinlein’s world – first there was Primus, the birth place of man kind. When that got too crowded Secundus was established with all the advantages of a frontiers world. But eventually this world also got to ‘civilized’ and the plan was made to found Tertius.
Heinlein’s idea of the right time to leave and found another habitat (planet) is when IDs are required in a civilization. GeZi World II does not require IDs (neither does GeZi World I, by the way), so I think I will have a bit time until I need to set up a GeZi World III.