Why are in tavern pass 2 golden standard packs instead of 2 new expansion gold packs? (pity timer 40 vs. 10)
Because it gives you the incentive to keep buying the tavern pass over several expansions if the pity timer of those packs are 10.
Nothing in this game is random when it comes to monetization. Everything is calculated to the last minute detail, by psychologists carefully evaluating gambling tactics and cues that keeps you invested and preferably addicted.
If was pity timer 10, so it is alright for me personally.