I finally took the time to scroll back through the Discord channel to see what is being discussed. There will be a wide variety of ways to modify your server the way you want within the Back Office tool. From the sound of it there is not likely to be a category on sites like Nexus Mods, but there will be online communities sharing knowledge. Some of the variations being discussed make it sound like there may be a few groups to figure out how to make PvP work all the way to the planet surface and I know you can disable it entirely if that is your preference. It also sounds relatively simple to clone a planet (as it would be at fresh start) and place as many copies around the solar system as you want.
There is also talk of getting a Discord channel specific to myDU questions set up. so it could be worth your time to hop on there for more.