Well, I went and checked out Wrong today since it had been a long time and I couldn't remember everything about it.
I have to second (or treble) the objection to the sounds the Terathans make. It is like fingernails on a blackboard.
The dungeon is not terribly challenging. I was able to solo the second level with Augur and went on to solo most of Fire as well.
Visually, it is a mess. The OSI design team must have put an overzealous rookie on the team the day they portioned out that dungeon. It is packed with blood, trash, and ruined furniture. Mostly it doesn't get in the way (no real LoS issues) since the monsters come to you, but it is distracting and unappealing. Dungeons should be scary or spooky, not messy.
The loot was minimal, but I did get a couple decent magics (one of them in Fire). The Terathans, in general, are not worth the trip. Most of my loot came from picking chests (those I could with 60 picking).
Finally, the place is too small. It needs another level with tougher mobs and better loot.
Other than that, I had a fun time there.
-Augur