Needlessly long and mostly empty corridors are awful and pointless.

They were awful when they had spiders, they were awful when they had mushrooms, they were awful when they had flurrydrakes, they were awful when they had akhevans, they were awful when they had mephits, they were awful when they had fire dogs, they were awful when they had elves, they're awful when they have nothing.

Immersion is fun when you're running around solo to explore, and the bane of all but 1 person in a thousand's existence when its in group or raid settings.

If you're going to buiild a massive structure and not have teleport pads / zone lines, you better make every room and corridor work to further your raid or group content.