I finally got a chance to watch the rest, and I really enjoyed it; I'm kinda glad now that I wasn't reading along with thread.
What I liked most about it was the same as with CoE: the fairly realistic depictions of how a world would cope with this kind of change. How some people would be bastards because they're just doing their job, how some horrible decisions would be made because the alternative was worse, how it would affect the global economy, that sort of thing. Some scifi shows seem to have amazing things happen in a bubble of main characters while the world carries on like normal outside, and this show shows the world outside the bubble.
Termite Man has a good solution to the flashback sequence - what made it boring really was having a third of an episode dedicated to it. It still could have been a lot shorter.
Answering the questions that were listed on the previous page (I copied them, but they copied as a picture for some reason, so I can't write in between each question):
The stuff being sent to Rex's phone at just the right moment, dramatically: yeah, that's a bit crap, but it's not some random guy texting him - it's that they finally retrieved the stuff after the explosion.
The three families could have continued living like aristocracy in a world of much 'better' people where they and they alone had control over who lived and died. What do you give to a man who's got everything and still wants more? Power over life and death for the entire world. I don't see that as implausible at all. ABSOLUTE POWER!!!
I have no answer about Danes. That didn't make any sense, I agree. The only explanations I can think of are too fan-wanky. I think he was there for Jack to have another child-killer to emote with.
The families had basically experimented on the blessing (Jack's words) using Jack's blood. It's feasible that they'd know how to stop the blessing if they chose to.
The death camps helped the families by getting rid of, well, the dead, which had to be done at some point (at least for the actually dead, rather than really ill), and changing people's whole way of thinking about what 'life' means, and exerting control. Once you've conceded to sending grandpa off to be burnt alive you're going to be more likely to do other things that you previously considered wrong.
Stockpiling painkillers would be a lot, in a world with unending pain and no death, but they owned a pharmaceutical company and had enough money and influence to own a lot of others, so that was probably just an example of one of many things they already owned. Also, they had control of the blessing.
The director of the CIA not being in a particular CIA office all the time does make sense. Why would he be there all the time? He's the director of the CIA, not that field office - and he only came in when the man responsible for that office 'died.'