This reminds me of a comic mini-series and was played out to perfection. Great acting from everyone, but especially Alaqua Cox. The story takes the MCU away from The Big Apple and allows a relatively unknown character to develop with a great supporting cast. I just wish they would have had more with Bonnie to help the ending pay off, which was still a great ending.
I would love to see Echo crop up again in the right story (Daredevil: Born Again?) and even then, for the right reasons.