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
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.
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
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.