Do I want to write a bog-standard m/f/m shifter menage or take a very sharp turn into revenge/horror with the various mains killing each other?
Killing people is more fun, I think, even if it's not as big a seller.
Bonus: shifter species is pronghorn antelope. People always expect herbivores to be gentle, but in some ways they're more dangerous than predators.
e. decided to go down the 'killing people' route.