Edit: sorry I'm derailing this thread.
No, i like your reasoning about the similarities between MtG and AoS, but imo it's not netlisting (which, as said by
@LizardWizard , at most is an annoyance… list copy&paste is a boring thing, but the unimaginative players don't know how to fully employ a copied list).
No, the "problem" is the tailored lists / decks.
staying on magic, i'm old and i began with unlimited / revised.
At those times, you were forced to build your own decks, trying to find the cards that, once put together, coud give your deck a theme and some synergies. Fun times, with totally different decks. Each game against an unknown opponent was going to be a true surprise.
Now, with Magic we have themed expansions, with many cards centered around a particular mechanic. With each expansion, after one week from the release, you only need to see the first played card, and you can already guess what cards are in the opponent's deck, with a 90% accuracy.
Boring.
And AoS is suffering from the same trend, mostly tnx to battalions / cities / lodges / whatever.
If you read a battletome as Cities of Sigmar, you know that at the next tournament you will find lists filled with wizards that exploit the bonuses granted by Hallowheart, or lists with steam tanks as battleline.
And I'm using CoS because i know it, but the same can be said for every new battletome. Fyreslayers? Heartguard Berzerkers.
When a game gives you on a silver plate a certain limited number of options that are clearly superior to all the other ones, it basically forces the players to use them. Which kills the variety and a good part of the fun.
Luckily, some of us like to think outside the box so there will always be a fresh build with an interesting idea behind it, but imo the problem is real.