Would there be any use in me trying to make a version for use in a scenario, given that data-updates.lua will not work? I've looked through it slightly but I'm not sure just how important the code in there is to the resource generation. This is such a good mod and trying to make a mega base without it just becomes tiring, so hopefully you have some suggestions :)

Data updates are actually responsible for disabling of original resource and biter generation so if they don't work you'll get both vanilla and RSO spawns.
Technically it should be possible to add few lines in control.lua to make RSO clear chunks first then spawn stuff in them but I'm not sure how that would work in practice since ore fields can be bigger then chunk.