I noticed that tellus, the parasite planet has both of these mods optionl which is great if someone only wants that experience and I wish I could do the same for hyarion, I don't find arig interesting or fun to play through but hyarion on the other hand looks great but requires arig leaving me in a decision that always ends up with me removing both.
Arig you can tell is an earlier mod, even due to the information page that both Hyarion and Tellus have filled to the brim. The planet itself is just basic. And I wish there was a way to separete these planets...