Ok decided I'll probably dust my wild cards. Here's why:
100 gold = 1 pack
1 pack = 5 cards
Accounting for gold & non-gold cards based on statistics in dust amount:
1 duplicate common ~= 5.7 dust
1 duplicate rare ~= 24 dust
1 duplicate epic ~= 114 dust
1 duplicate leg ~= 486 dust
Non-duplicates are pretty straight forward:
commons = ignore
rares = ignore
1 epic = 114 or 400 dust (dust vs. keep)
1 leg = 486 or 1600 dust (dust vs. keep)
Adventures are every ~8 months.
Time between full xpacs have been a little odder. The first one was ~1 year from beta. Second was 11 months. Third 8. Fourth 8. And fifth was released just 4 months later. If we only count the recent years, that's ~7 months (rounded up) between full expansions.
Adventure = 700 x 4 wings = 2800 gold.
Xpac = 200 packs x 100 gold = 20,000 gold.
Gold needed per year for f2p = 2800/0.8 + 20000/0.7 = 3500 + 28571 = 32071
If you craft any cards at all prior to opening packs, those packs are worth less. You're best off getting 100% of your pack opening done in one go, and then crafting after. Otherwise, you lose on gold & dust.
To get 32071 gold per year, you need to acquire 88 gold per day on average from daily quests & grinding. Weekly brawls, monthly ladder rewards, and bonus packs/dust help smooth out the estimates.
Long story short, if I keep opening packs right now, I won't have gold for the next xpacs, I'll have to pay $$$.
This post was edited by Canadian_Man on Apr 10 2017 08:18pm