We have DRAGONS!
Why would you want these guys?
Also, you are Dragonborn, you kill dragons, not some swamp monsters on steroids. >_>
/troll
Seriously though, they would be awesome!
It would be kinda funny actually.
You run from the dragon who just presented your bottom on a silver plate to you, and run into a cave.
Now, you think that you are safe, but you see 2 red glowing eyes coming from the lake in the cave, after which you just take your pants down and bend over only to get over with it as fast as possible since you know to who those eyes belong to.
But the creature say 'No thanks. Dragon took care of your bottom. I'm more interested in nipbles!' and then he gives you a nuclear purple nipble of legendary proportions!
You're never same again after that experience...
But yeah, gehenoths would be cool and I think that there is a fair chance that they are in (they fit the lore AND Skyrim after all

).
Still, they should be relatively rare if they remain to be top tier creatures like they used to.
Would be an interesting Easter Egg.
It shouldn't be an EE, but a normal monster in the game.
A gun would make a perfect EE! :flamethrower: