Producers - please spend more of the budget on writers. The characters in this show are generally unpalatable, faceless, trite, and boring. I don't care about any of them except for Nick. Nick is actually somewhat believable and compelling, probably because the writers for this show has some experience with drug addiction, which explains why just Nick succeeds as a protagonist while the other characters come off as impossible and woefully unappealing.
The dialogue seems to have gotten worse in this show. There are a lot of awkward scenes, appeals to platitudes and flat character stereotypes, and forced tension and interhuman conflict. The downfall of humans just happened, and human personalities are not going to change this much overnight. The zero-sum conflicts here should be more subtle, and more natural - be creative. I expect to see humans wanting to survive AND wanting to help each other, but some at the last minute deciding self is paramount and doing "unnatural" things to the end of self preservation. The hostilities and wanton violence we've seen so far this season is unconvincing.