Well, maybe you're right about that. It would probably kill the atmosphere of the songs.
...But then again: I like many of their later albums very much, too. The production of those CDs was much better, so I'd still give it a try. Have you ever listened to the re-recorded tracks on the bonus-CD of their Cast In Stone comeback-album? I think, they sound killer! Bloodlust, Die Hard, Bursting Out and all the other classics...it's like listening to them for the first time again. And despite all of this: a good song will always remain a good song, and it can only become better with a well done production.