The second thing I'm gunna do is make it so slaughterfish don't attack you straight away. They'll back off and wait for a while watching any player in the water until there's either a dreugh present or enough of them to perform a pack attack on the player. I wanna do this with nix hounds and cliff racers as well, but slaughterfish are (normally) confined to water so they won't have pathing issues to deal with like racers and hounds.
Which leads me to another modification I wanna put in. It's really dumb that you can swim around effortlessly in full armor. Especially armor that's supernaturally heavy such and ebony and daedric armor. Gunna have to make some change that makes it so if you get in the water with heavy or medium armor on you're severely penalised.