FYI: For those that do not already know this, if you use the keyword search “refund” in your collection manager, it will show you all the cards that currently qualify for a full dust refund. Just be sure to click on Wild cards as well, so you do not miss refunding any of those cards.
On my main account, the nerfs gave me a reason to open my Whizbang and Standard packs, which yielded a Timewinder Zarimi and Zilliax Deluxe 3000.
I opened around 40 Whizbang packs on release day, which had given me a Reno, Lone Ranger and Wheel of DEATH, so that was another 3200 dust. I ended up netting about 12k dust from all the nerfs. Cha-Ching!!!
https://imgur.com/a/YOsrkCq