Diablo IV Microtransaction Reassurance

The latest Diablo IV Quarterly Update seeks to reassure gamers about monetization plans for Diablo IV. The lengthy post includes word from Kegan Clark, director of product for the action/RPG sequel. explaining how its Cosmetics Shop and Season Pass will not provide any gameplay advantages: "As we’ve discussed previously, Diablo IV will be a full-price game with a Cosmetics Shop and Season Pass—none of which provide any pay-for-power options. Our goal in designing our in-game purchases is that we want to create beautiful things which add value to players’ experience of the game." Here's more:
The Season Pass has Free Tiers and Premium Tiers. Throughout the pass players can earn a variety of rewards for free, just by playing. At any point during the Season, players can purchase the Premium Pass to unlock the ability to earn Premium rewards tiers containing seasonally themed Cosmetics and Premium Currency.

The Season Pass awards cosmetics. Like the Shop, these don’t affect gameplay. Additionally, certain cosmetic types are exclusive to the Season Pass.

The Season Pass awards Premium Currency. Players can spend this currency on cosmetics offered in the shop.

The Season Pass awards free Season Boosts. Boosts accelerate players’ progress for the duration of the Season. For example, a Season Boost might accelerate XP earned to make leveling multiple characters within a season faster. Because they affect gameplay, Season Boosts are free rewards for all players. We want to be clear that players can’t unlock Season Boosts more quickly through purchases--there is no way to unlock more boosts, or boosts at a faster pace, by spending money.

Players can purchase Tiers-but they won’t speed up getting Season Boosts. Players can’t upgrade Season Boosts just by purchasing Tiers, because they’ll also have to earn level milestones to apply them. All other Tier rewards can be unlocked instantly by purchasing Tiers. In other words, there’s no way to shortcut getting Season Boosts by buying Tiers; they must be earned.