Game discussion.

Enroth is a world. The continent was named after it because it is the largest and from it the colonists of Varna began to settle on the planet. Where is the evidence that Xeen is the name of this world?

And where is the evidence that the name of the world is Enroth? Size is also a debatable issue; Antagarich is larger, in my opinion, and nothing is known about the size of Jadame at all, since in the only game where it is used, i.e., Might and Magic 8, there is no complete map of the continent.

In the descriptions of magic, artifacts, etc., in M&M6-8, it says, for example, "common in Enroth," even when the action takes place in Antagarich or Jadame.

The descriptions also say "common in Jadame," "common in Erathia"; it all depends on the specific item and part of the game. By the way, I tried to remember, but I couldn't recall any item in Might & Magic 8 whose description mentions Enroth; however, Erathia is mentioned frequently.

Also, why would the Completed Seekers of Adventure need to fly back to Xeen if they flew away from its orbit?

They seemed to leave in the third part, didn't they? And in the third part, the action takes place on Terra, not on Xeen.

Why did Xeen suddenly become a distant colony? Of course, after the completion of the Star Seed project, there was nothing strategically important in Xeen, but it probably wasn't located in the remote possessions of the Ancients.

I can't say anything about this because I don't know where this came from. But why wouldn't Xeen be a distant colony?

In general, this issue has already been discussed here - /topic/307/

Added 3 minutes ago
There, I also answered you.