Wow, that music is insanely good, even better than I had thought. I just listened to some of it again, and some of the sounds are sophisticated, and chilling too (like the first guitar entrance or the quiet entrance of choir in the Overture). The recording is also more easy to listen to sonically than last time a few years ago when my system was not yet as good. The voices are often quite 'essy', but this is not always the case, and there is no general treble tilt. This points to problems on the mastertape itself, not problems with CD remastering -- except that they didn't try to improve things. On the LP the voices probably are less 'essy', but that would be for the mundane technical reason that voices must be de-essed for LP, not because voices would sound inherently better on the LP medium.
There are audiophile CDs of the album, where they may have taken more care trying to actually improve things; I might want to try one of those since the music is so good. As for the lyrics, it is, among others, interesting to hear the story of Jesus through Judas's perception.
The album cover that Peter shows is the one that I remember from my childhood in Germany.