Milton still seems like a worm looking for Governor love.
Martinez lost his family, so he might have a morsel of humanity left to reach beyond Daryl's conversation.
Although you could say that about everyone on the show - everyone left in the world, even. I think you're right about Milton, although he might be getting over it. I agree fully about Beth: she's one the biggest divergences from the books at this point (Herschel took over Dale's role, more or less), so I'd like to see her grow into something worthy of that divergence.