They've hit the point where they're afraid to kill people.
I'm of the opinion that character deaths should be used sparingly for greater dramatic impact. Sure in season one they killed off a lot of characters--Eden, Thompson, Ted--but it didn't carry the weight of a major character death since these characters for the most part were plot devices.
In fact, you run the risk of turning it into a cliche as you try to find out who is going to die next and it becomes predictable. BSG has fallen into this trap terribly to the point when a character dies it is routine and you reach a point where you are desensitized to the whole thing.
I think that the switch between the original premise of a constantly rotating cast to their current core cast approach really took something away from the whole show.
The only thing I liked about the huge cast in season one is it gave the series an epic feel with all these different characters with a wide range of character reactions & perspectives--not so much for the possibility of a death.
They've fallen into creative cowardice, not wanting to alter the core dynamic of the show, and that's impacting quality, it has been for a while. While they're getting back on track with the writing, the cowardice remains and the characters are becoming static.
I think the biggest problem for the series is the lack of a creative vision and that is what is hindering the writing.
If the show wanted to continue the style of season one with tons of characters, lots of interconnected stories, an emphasis on mystery and keeping their cards close so as to keep the audience constantly confused as to what was going on that's fine. It worked because the show was interesting, fast paced, all the threads were engaging, the writers were creative, the mysteries were intriguing.
I can also understand if they wanted to step back and attempt to adopt a more traditional drama style that was less LOST-influenced and more conventional that most viewers were accustomed to before LOST's unique style came around--more modest ensemble, fewer arcs to allow for more depth on the few they do focus on, less jumping around chronologically within the storyline etc.
The problem has been the writers seemed to not have thought through the story. In the truest sense it is serialized but the episodes feel less like interesting links in a narrative chain and more like situations of the week--Hiro/Ando in India, Claire helping Alex, Noah gets kidnapped etc.
And without the interesting backdrop of season one, the characters on their own simply aren't interesting. Perhaps Kring rightfully realized that this when he initially advocated changing out casts each season and bringing in a new group. Perhaps he had created them to be as interesting as they were for a limited time and they had served their purpose when volume one concluded. And so without interesting plots or interesting characters there is nothing left. I mean the character scenes are lacking, the plots are anemic. Successful arcs build on what has come before and build into something that is guiding it the whole time. Here it feels like it is just stumbling from week to week. There is no story anchoring the characters that is meticulously developed in interesting directions. No, they simply jump from one scenario to the next and the writers hope in a vacuum it is sufficiently interesting and for the most part they really aren't.
When you bring in new characters for the volume you are suppose to bring them in to shake up the dynamics for the preexisting characters but Alex or the Hunter have yet to do that in my opinion.
The idea itself for Fugitives is interesting but it just isn't being implemented in an interesting way. This reminds me of ENT's season two where it isn't bad and certainly isn't unwatchable just exceedingly bland. Maybe Fuller can turn it around but I've read interviews and he had high praise for these last few episodes which makes me wonder.
Currently, Heroes can be brought back onto the rails, but that requires major changes to the core characters, higher stunt and SFX budgets, the big disposable casts of Season 1, less prophesy, logical conflicts, logical actions, logical consequences, and more follow-through.
SFX budget isn't the problem. The show needs better writing but there comes a point where not much can be done to save a show when it has really turned off a viewer.