[Jack will take too open, thank you. He's always preferred flying than walking, and now with his touch sense screwing up, there's no way he'll come down. His feet would feel freaky. He flies around the room, taking a good look that reveals... well...]

There's nothing here. [He sounds really frustrated about that. But when he hears Illidan, he realizes maybe he's having it easier than the other groups. He should be more helpful.] We are in a big open room, with a platform in the middle that there's no way I'm stepping on. Is this place always messed up like this? The flood couldn't have reached them so deep inside...

[...or could it? Water was really pissed off with Ceres after all. To be able to get inside like this, that's some impressive work, Jack thinks. When he's done with his flying, he returns to the group's side, always hovering.]

There's also a working elevator which screams "trap!" but-- I don't see other options.