I would. And did!

This show isn't about The Others. It's about the survivors and their relationships with each other. The producers have said this numerous times. Having Anna-Lucia kill Shannon creates much more character conflict among the survivors than having an Other kill her.
The Others aren't the heart of this story. The survivors are. If you're expecting the interactions with The Others to make or break this show, rather than the interactions among the survivors, you're going to be disappointed.