::Bobertoq, the description you gave is the one you would give to someone who doesn't know about it and asks you what progressive metal is about. But for me at least, there is more to progressive than that. I hear progressive elements mostly in the second halves and endings of some of the songs, and almost exclusively in the guitar work. Take the ending of Still Remains, it sounds like the ending of Misunderstood by Dream Theater to me. The ending of Wonderful World reminds me of something from the Scenes From A Memory album also by Dream Theater, probably Finally Free. The part of Slip to the Void where the singing (not whispering) begins, the distortion guitar sounds like something by Symphony X to me. And most of the time I'd find myself thinking "Hey, that guitar tone / amp [setting] sounds like [insert prog metal band here]". I remember thinking about Dream Theater, Symphony X, Opeth, Porcupine Tree and Hourglass at at least some point in the album. 
 ::I mean, don't get me wrong, there's no way I'm saying this album is just as progressive as any album of one of these bands. All I'm saying is that it imho certainly contains many tiny progressive bits (which is also one of the reasons why I like it so much). If the album deserves the description Progressive Metal it is another question... however I agree at least that this should be the last of the genre descriptions. 
 ::(written by a very frequent listener of progressive metal)