Yeah, it's awful how sloppy it's gotten, especially with loose ends not tied or even addressed at the conclusion of this season.
I remained hopeful, though with flagging enthusiasm, throughout the show simply because it was a unique concept for television, and I so wished for a return to pilot form. This particular finale was awful. The acting in scenes meant to elicit a response gave me nothing, except "man I hate that guy's acting," and only a superficial sympathy for other characters I'm told I'm supposed to care for.
And then my girlfriend made a funny comment, wondering if the show will move on to another group of survivors. I haven't read the comic (though I believe they stick with the same group), so I don't know for sure, but I immediately turned to her and said, "that would be much more interesting."
I really like this idea, and I think it's one that would work for this show. Each season follows a different group of survivors and how they've come to terms with the apocalypse, especially now that it's been revealed the virus has gone global. It would keep things fresh, and if we tire of the characters but still remain enthralled by the concept, we wouldn't have to dread the subsequent seasons.