I saw it backwards as well, and enjoyed it independently all the same. That being said, Firefly really is meant to be viewed first, and anyone who hasn't seen it, with all due respect, really isn't qualified to criticize the character development. After watching the original series I quickly realized that anything more would have been a waste of precious screen time. River's story arc was the priority, and I couldn't be happier that it achieved victory over cancellation. Sequel, I say.