Ever since Morrowind, I have wanted Bethesda to add scary underwater monsters. (Dreugh/Slaughterfish are not very intimidating) I am talking about very rare, giant, dangerous, possibility of swallowing you whole type of monsters. Have you ever been exploring deep underground & see a large body of water (Blackreach for example) in a cavern & at first tell yourself:
"Oh h*ll no. I am not going in there"
Only to have your inner metagamer kick in & say:
"Bethesda was to lazy to add underwater monsters silly".
I'd like that to change. With so much diverse life on land I find it highly unlikely such life could not exist in Tamriel. Why couldn't there be a massive Mudcrab or Giant megalodon/kraken guarding a sunken east empire ship or something to that effect?