im not a f2p player at all, and i have no problem buying more packs i was going to do that anyways, but i buy packs with the intent of dusting X amounts of legends and epics for the cards i want. I do this maybe twice a week spending about $100 dollars a month on the game depending how lucrative my month was. That being said, i don't dust every card, just the ones i thought were niche and trash teir and didnt synergize with the rest of my collection. But. Those cards just changed and ive dusted them all a dozen times over so yeah im a little mad.
How is it that you spend $100 a month and still need to dust any cards at all? I personally only buy the expansion promo bundles (i.e. $50-80 every four months) and the rest with gold (about 6-7k gold saved up come each expansion), and I have more than enough dust to build all the top tier decks (and some fun decks) just by dusting duplicates. As a rule, I never dust non-duplicates unless they have rotated out of Standard (and even then I restrict myself to trash tier cards).
You shouldn't complain about the buffs just because you made poor dusting decisions.