Because I've crossed over
chaypeta's
Terinu with everything else, I may as well with my stories.
If the Varn Dominion showed up in Earth's system after humanity was transferred to the Ring, both sides might have a bit of a dilemma. The Varn would appreciate the Groupmind's dedication to cleaning up the Earth's environment, and obviously the Ring represents a significant leap in materials technology from the Dominion's standard. OTOH the Groupmind AI they'd only regard as a threat, particularly after it poo-poo's the idea of Varn godhead.
Gripping Hand, the Groupmind itself would prefer to have peaceable relations with the Varn, but it's got too many alien invasion movies in its archives not to be suspicious of Varn motives. And given its cavalier willingness to sacrifice its own sentient morph AI's for humanity's sake, I'm not sure exterminating the Varn, Ferin, Creo, Galen, and the Vulpine would bother it at all.