I'm a bit behind so the latest episode I've seen is the one where Echo helps the Mexican woman to escape from prison and frankly, where Echo is now with the various different personalities coming to the fore as needed, this is where the program needed to be in the middle of the first season, not now when it's too late.
I also didn't recognise Summer Glau initially because I'm not used to her having that much dialogue.
But there is some elements of characters being reduced to vessels to move plot around, probably due to imminent cancellation, such as Topher and Adelle's wildly inconsistent levels of care for the dolls they send out to whore in the world for them, Topher helpfully making plans for a machine that will allow anyone to imprint into anyone else at any time and then Adelle backstabbing him by passing the plans to the people who have just demoted and demeaned her.