Can it still be called a "raid" anymore?

[Shurrikhan]

Well... Considering the around story the raid with Omega, it perfectly makes sense to not have trash in there...

Omega is literally throwing you into an arena to fight the bosses. It would be more awkward if it went "Oh, by the way, before you do that, here's some random things to fight."

Agreed. For that, it's perfectly fine, but it's aesthetic is built around generating space out of nowhere. That isn't true, however, of any of the raids we've had prior, and is not likely to be of any of the raids hereafter. It doesn't exactly set a precedent; it just did what it ought to given its idiosyncrasies and general concept.

Does that mean a 5.x Allagan fortress 8-man would need to have trash in the same form as we've seen in Coil or Alexander? Not at all. Maybe it'll even throw in gunships or mechs; who knows? It should simply fit whatever it's got and flesh out whatever setting it intends to immerse us in.