I like these, but a couple are would make the game a bit more ragequitty.
Fights shouldn't be able to make nichelings half blind, considering it's a gene that can get passed down to babies.
Rouge males shouldn't be able to take a female hostage if her strength or defense or both are equal to or higher than his. They also shouldn't be able to kill babies unless the female leaves the nest
Drowning damage should go away a day after you leave the water, not 3 days