The picture, special effects and cinematography (except on the last episode) are really good, but the story line is far from excellent, acting has been okay, can't blame the actors though if there's a lack of compelling dialogue.
We have entire story lines which we have to wonder why they were pushed so hard for seasons, that have been rendered moot, in the grand scheme of things they didn't matter. Also subverting expectations for the sake of "subverting" is a far cry from when they did it in the earlier seasons (1-3) to move the plot forward.