...but now it is just a weird sci-fi show with big plot twists and revelations. It is still engaging and it has great character moments, but the only questions is asks anymore are about its own mythology, it doesn't ask any of the big questions.
I'm sorry, you're describing the last season of BSG as fully as you are "Lost."
What does BSG have? Well, it's certainly not that it's meaningfully asking "big questions about humanity" at this point any more than that's really ever true of Star Trek
. What it has, at its best, is that the writers and actors don't flinch at digging into the characters in unflattering and often surprising ways.
Watching Adama come apart right now is pretty riveting - this guy's the star of the series and the leader of humanity, and he can't get through a staff meeting without a drink in one hand.