Fork of Intercontinental Rocketry Settings allow you to specify the how many copies of each planet you want (up to 20 copies of the original planet) Also includes support for some modded planets (for additional mod support please open a discussion) Sales pitch - Every planet in Space Age, generates additional subplanets, allowing you to start fresh with any planet at any time.
Mods introducing new content into the game.
Known issues:
There is a known problem if the connection between two sub planets crosses directly above the sun (for vulcanus with 10+ planets)
The connection will be displayed weird and selection becomes a pain, but I believe lies with factorio itself.
Can I have custom planet XYZ supportet?
Open a discussion and I will see that I implement it (no guarantee for long term support)