I agree, this was completely unwarranted. I'm not feeling the new mix at all. It just doesn't have that same vibe. I'm not a 100% purist either; there are times when a remix actually makes a song or album better, but in this case, definitely not. Even a remaster wouldn't have been justified to me. I thought the original was perfect that way it was.
Playing devil's advocate though, if remixing/remastering albums is what it takes to re-release them to get today's youth familiar with classic albums and bands like this, then so be it. I'm so sick of all the fucking genre-confused autotune/crabcore/metalcore/emobuttfuckingcore/letsbreakdown mashup bands, and I sincerely hope they market the shit out of these and put them in every hot topic. No, I don't want to see Death disgraced by being sold in hot topic, but perhaps making kids today aware of such good music might help snap them out of this pussy twink music they call metal.