Played 11 games yesterday, played against all factions, 2x Francescas, 2x Broovers, Foltest, Unseen, Eredin, Eithne, Bran, Crach and Emhyr, at 3400 MMR so it's not like it was low ranks. That is pretty diverse, not to mention players running Fr and Br played differently with different cards even though it's roughly the same archetype.
Netdecking and lack of deck diversity is not the same problem, if game is balanced enough all factions will have at least one powerful archetype, deckbuilders will see it and netdeckers will than netdeck according to their card poll and personal preference so we won't be having another Dagon/Bran meta like we always end up having. If game is balanced, netdecking doesn't really impact deck diversity very mich
Now I will write something controversial as I think netdecking can't be bad for the game. Netdecking can't make you a good player, I mean you could watch steamer and learn about every interaction and counterplay imaginable, but no one would do that. Deck building is hard and too much trial and error when you are starting out, imagine being bad player and bad deckbuilder, you might as well quit the game since you won't be winning much.
Most players use netdecking to familiarize with archetypes and interactions. I for one don't really watch streamers but I do stop by GwentDB to check out new popular decks. When I see them in action I make adjucements as meta evolves. I did get to 3k this season with my own deck I made from scratch and I do like to play some less competetive decks like Ciri Dash variants I build myself, but I would get bored playing only that.
Another reason I make adjustments to the decks is the major reason no one should complain against netdecks, the fact that if you opponent netdecked (especially if he leaves all the same), you know his entire deck, so you know exactly what to expect and how to counter it, so it gives you enormous edge over the opponent if you bother to remember the top 6 decks at GwentDB, bad players with netdecks will be favorite matchup for you after that
Another thing I take issue with is referring to all players who netdeck as some sort of robots who only care about winning and don't know the meaning of fun. Believe it or not, people have fun even when they play netdecks, as best decks in the meta are often interesting, interactive decks with high skill floor, so they are fun and rewarding to play.
As for the crafting abolition I believe it is plain wrong, crafting is integral to new and f2p players who now have a way to build good collection early on. Banishing scraps and making ore only currency would be kinda interesting, because you could than open bunch of kegs and gambling is fun, but only if you could use ore to craft cards as well.