I gotta say, the first season is better than the second. The only problem with the second season is that there's nobody worth rooting for. The protagonist is boring, the son from Season 1 is hardly present, The holo-designer is really 2-dimensional, and just about everyone else is either evil or more boring than the protagonist.
Season 1 did have some very well done characters. The father/son relationship was really interesting and emotional; the enforcer that died was sympathetic, and had some spark; the main enforcer was badass; and both the villain and the society the protagonists were fighting to save were equally hatable, which made for very interesting situations.
Halt and Catch Fire was pretty damn good. A decent premiere episode. I'm surprised they did such a big time skip, but I kind of like it. I will say that while Joe's storyline handled the timeskip better, I'm not sure I really like where he's at right now. Cameron's storyline is by far the most interesting right now, and it seems like her company, Mutiny, is going to be the heart of the show for this Season. I'm cool with that.
Gordon's storyline has potential, and Joe's mostly has me confused, but intrigued.
Also worth mentioning that Cameron's storyline is helped by, at the moment, having the most supporting characters from Season One. So while they remain separate, I think I'll be paying the most attention to that part of the show. Though, the new character in Joe's storyline is interesting.
Cameron/Catherine's storyline still remains to be the most interesting, especially since it now has some overlap with Gordon's and that part of the show still has the most interesting characters.
That being said, I think Joe's storyline will pick up soon as he works his way out of the situations he's found himself in. I'm guessing Sarah's father (Jacob?) will be the Nathan Cardiff of this Season. That is, the closest thing to a villain.
The Cameron/Bosworth dynamic remains one of the best parts of the show. And of course, Bosworth is awesome.
Gordon's storyline interests me the least right now, and I can't see where it's going. The overlap with Cameron's storyline is a little interesting.