You already know if this is something you want to see, knowing of the source material and its straying from anime convention. Needless to say, definitely not for everyone.
I would say it's let down a little in one aspect. If I were to show this to someone not familiar with anime, at the over the top reactions - even considering the intentional melodrama - the person would no doubt roll their eyes or even laugh. Why couldn't the characters respond more naturally? I really cant understand what goes through Japanese minds, its infuriating at times. It especially stands out here in this series because of the unusual high standard of everything else. It's such a pity, I feel this could have gone a long way in gaining recognition for the medium outside the usual circles.
On and also (this not being a fault of the show itself) if you are familiar with the story, some episodes can be a bit slow, so keep that in mind.