Scales are both the most important and the most tedious part of any practice regimen, but they're still a lot less complicated than, say, feelings.
In order to free yourself from the perpetual cycle of good music and bad music that causes joy and suffering, respectively, in every genre, you must transcend to a higher order of genre where all the music is the same and there is no "good" or "bad." We used a similar chart before, but this one introduces the level of transcendence. Level ∞+1 is smooth jazz and Kenny G.
Where are you guys? There's no wrong place to be!
Why not just say that Masater of Puppets is the ONLY Metallica album and call it a day?
Subtlety has always been Slayer's M.O. in regards to their imagery.