Quote Originally Posted by Anonymoose View Post
My first thought was that there are a lot of places IRL that use the similar name "Arcadia" to hark back to a region of ancient Greece associated with being an idyllic refuge, but that usually carried associations with unspoiled wilderness so I'm not terribly confident I'm barking up the right tree.
I was approaching it from the architectural term for "arcade", meaning "lots of contiguous arches", but from what we see in that concept art there are no (meaningful) arches, so that's probably wrong as well.

I admit I'm kind of reluctant to consider that the meaning might be based on the "gaming machines" meaning of "arcade", because that's a bit too whimsical for me for the eight-man raid.