How will this Shane scenario turn out? He's a major asset when they need a gunman. I predict they will find a way to co-exist, until the end of the season.
I predict that some event will drive everyone off Herchell's farm. Otherwise they would have to begin turning the farm into a fortress against roving walkers and bandits. That story line would go no where.
The story is best when there moving, looking for that mythical location of safety and harmony.
The next to die? Dale. (Whom I will mourn because I like the character, Herchell's character will fill that role until the end of the season.