Truly, a great loss.
There are cards that I have a dozen copy of that I choose not to dust specifically for this(you can't craft past 4--2 golden 2 normal, so it's basically get and keep for this). I'd probably still keep them for a while, but they might no longer be useful.
It's just shaman and rogue, which I go hard for totemic reflection shaman and vulpera+cutting class rogue. I never did have enough rapid fire for hunter, but rip that too. HP mage actually needed variety and back when these were possible, none of the others quite stack up back then.
P.S. Yes, I know you shouldn't dust cards until you need the dust in case of nerf so you can get full dust. I just generally otherwise dust by oldest to newest set when needed and skipped those over in that process.