I personally still enjoy Black Rain. But I would agree that it's partly dissapointing. The sound is fine for me. Maybe the songs are sort of obvious. I'm not quite sure. I think the album get's stronger at the end. The best songs for me are the last three which were not on the original album. The ones from the tour edition:
Nightmare
I Can't Save You
Love to Hate

and Trap Door is nothing but great.

I'm looking forward to the next album. Can't wait!