A few of metal's strengths are its diversity of riffs, its bombast, and its fantastical themes. Those are things you won't find to the same extent in most other genres of music, with obviously some exceptions (mostly prog and hard rock of the 70s). Stuff like Godflesh, mid-90s Century Media goth metal, etc appeal to metal fans because many metal fans are retards that won't pick up anything off of the shelf if it isn't the metal shelf. They have to be spoonfed things to try them, but craft a narrative about how playing non-metal band X's riffs with more distortion and the occasional chug, and they wolf that shit right down. Godflesh isn't even that bad or anything, Streetcleaner is decent, but man it's laughable when metalheads go "Wait, you listed a lot of industrial but you didn't even mention Godflesh or Ministry, LITERALLY THE MOST IMPORTANT INDUSTRIAL METAL BANDS, I mean really, I can't even". And I don't even like much industrial; Foetus is awesome because there are strong Alice Cooper vaudeville vibes there, and I really like some of Controlled Bleeding's non-industrial quasi-ambient/quasi-choral weird stuff, but the genre doesn't really appeal to me. Metal people regardless need to start trying the bands that influenced their pet favorite alternative metal bands.
Godflesh is probably a bit more original than Trivium, although their riffs are still poorer.
