I doubt anybody will see this, but I had a thought as to how we should organize these pages.
I say that we put songs in the "Arrangement" section ONLY if it's an actual arrangement/remix or other special scenario like production (say, NAOKI for TERRA songs). I don't entirely trust Slayer to have all of their facts straight (especially for all of the newest songs) in regards to composition/arrangement so I think we should put everything as "composed" unless it's a flat-out arrangement/remix/production scenario.