I voted for the first option because I'd like to see The Flower Kings, Billie Eilish, Marillion, Alanis Morrisette, IQ, Marketa Irglova, Anneke van Giersbergen solo and all the other bands to use harsh vocals. No guest singers too. Show me what you've got.
Seriously though, I think sometimes you could give or take them—in terms that the song could still work well without them—and sometimes they absolutely make the album. How can you do the themes The Reticent did in their last two albums so eloquently without harsh vocals? How can you do that Agalloch song that got me into growls (Our Fortress is Burning - II) without showing the complete anguish encompassed into the harsh vocals the band used there?
Hate harsh vocals all you want—I hated them until 2016 I think—but, in my opinion, they definitely have their use in the art of music.
Not arguing with you, just sharing a thought. I've heard the new Anneke album, and while it's not my favorite album of all time, it's very, very good, and one of the things about it is that it's unabashedly BEAUTIFUL. There's an elegance, a grace to
almost all the songs, and for me, one of the two best songs on the album - the closer, "Love You Like I Love You" - is just... beautiful. There's no other word for it. The arrangement, the lyrics, the melody, the singing, it's like a photograph, and it's meant, I believe, to express the beauty (and power) of love. I don't see what hard vocals would do there other than to break the spell, to ruin the photorama.
As a general proposition, in life, anger is the easiest emotion. I have a bus-full of people in my life who only know how to express emotion through anger, whether it's embarrassment, fear, hurt, disappointment, or, well, anger. I don't say that growls/harsh are "easy", but there are more singers that can do that in one form or another than can hold a pure, crystal, clean note, like, for example, Freddy Mercury does in "Somebody To Love".