It might be my adulation of Susanna Thompson but isn't the most interesting plot line by far Oliver/Moira?
To me, it's the island flashbacks.
I'll along with that. What happened during those five years on the island molded Ollie into what he is now. There's a lot we haven't seen yet, a lot of hell that he hasn't endured yet. I'm hope the show continues just so we can find out what else happened to him after making his escape from the river.
And what's up with the Chinese Archer? I can't figure out yet what his real game is.