The timing of these nerfs is the most annoying part to me, people just crafted new decks after the expansion. Problem with these nerfs is they didn't weaken archetypes, they destroyed them completely. You can't replaced a nerfed card with something else so you'll have to change the deck entirely, thus costing more dust should new cards be crafted.
All the decks they nerfed had essentially no new cards from the expansion. Unless people were new players they would've already had these cards and didn't waste dust crafting decks effected by the changes.