actually, I'd find it very refreshing and amusing if metal actually took a turn to become softer, use acoustic guitars and stuff more. You know, focus on emotional heaviness and tension instead of blasting and fucking the instruments at mach 45 for 7 minutes.
Because I don't know about you, but Ki, although most will disagree with me, is one of the most "metal" albums I've heard in ages, despite it not being "metal" in the traditional sense of blastbeats, constant screaming and distorted guitars. What makes it heavy for me is the tension and the dynamics, something that I think a lot of metal acts tend to forget nowadays. I mean, tons of classical music is heavy as hell through the sheer extremety of dynamics, despite there being no distorted instruments or particularly virtuose playing. I really hope metal will evolve to rely more on dynamics and tension than pure anger and aggression, but then that's just my opinion.