Plot as good as before (suddenly everyone's immortal).
Possibly moving from an episodic layout (each week a new story) to a season-length plot? Not sure about that.
Seem to be moving from slightly quirky Cardiff setting to Washington DC -- might be turning into yet another Washington FBI/CIA drama. A cynical move to get a bigger US audience? Might be losing it's edge on originality.
Will still watch next week.
I am hoping that the rendition is just a temporary thing....it will not *really* be TORCHWOOD if they do not go back and pickup with some of the old stuff from the first run of the story.