I knew there were some I had missed. Being forced to go by memory is going to make these suggestions incomplete by nature. Also unjustifiably absent are:
dISEMBOWELMENT - Transcendence into the Peripheral
King Crimson - In the Court of the Crimson King
More Kraftwerk
Tangerine Dream's 70's catalog
Fripp and Eno - Evening Star, No Pussyfooting
More reviews of Brahms, Beethoven, Schubert, Wagner, Bruckner, Bach, and other prolific composers
First two Mercyful Fate
As well as Deceased's
Luck of the Corpse, Boards of Canada, Biosphere, Eno(well beyond the two mentioned albums), and more Autechre.
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And more in the "should be there, but not as definitely" camp:
Bathory - Hammerheart
Autopsy - Severed Survival
The rest of the 80's Voivod records
The first four Sabbath records
Mutiilation - Vampires of Black, Imperial Blood
Necromantia - Crossing the Fiery Path
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Helstar - Nosferatu
This exists, although you have to go to the "Heavy Metal" tab to find it(Helstar doesn't show up on the Alpha tab).
Which brings up something else: shouldn't *all* available reviews be integrated into the Alpha tab? In fact, why not integrate the DLA reviews and the Neoclassical reviews section into one section? There's a ton of stuff in the latter worth hearing - much of it even surpasses the majority of what's on the DLA.
Why are they split up? It's not as if the DLA is purely metal/grindcore/hardcore/etc., seeing as it already has reviews for Kraftwerk, King Crimson, Dead Can Dance, Lord Wind, My Bloody Valentine, and even The Doors - although the first three are, like Metallica, hidden, although in their case by only being accessible via a hidden "Metal Influences" tab... Nor is it as if the Neoclassical section is devoted purely to non-metal, with its reviews of too many metal bands to list. I understand there are duplicate reviews for A FEW of the releases in question, but surely there's a more intuitive way of allowing these to co-exist.