When you buy legendary crests, you're not purchasing a roll of dice like the case with the FIFA Ultimate Team card pack like. You are buying a chance to fill the dice with dice, to get into the game engine and tweak the drop rates (slightly) to your liking. These addictive gaming mechanics aren't separate from the addictive gameplay mechanics. They are instead tied directly to combat and loot drops that are part of the game Diablo IV Gold. Diablo is extremely well-placed to do this; as my friend Maddy Myers pointed out, these heavily loot-focused games have always had a certain slot-machine-like quality that Diablo Immortal's business model makes sense.
Blizzard has taken pains to emphasize that the monetization of Immortal can be ignored until the endgame that is the case, and it claims that the majority gamers enjoy playing the game without spending anything, which is reasonable. It's untrue to say that the most enjoyable part of Diablo's games is to play through the story, instead of maxing out your character. It's just as absurd to claim that the games have always been designed to instill the desire to hit the power level of their players. For people with a tendency towards gambling addiction, towards the addictive characteristics of Diablo's Item gameor, more importantly and both of them -- the crest system of old is extremely harmful and can be very exploitative.
To everyone else it makes Diablo less fun.
We have been here before or in a similar situation. When Diablo 3 was released in 2012 it came with an auction house in real money that players could buy and sell their drop items. In theory, this existed to stop cheating and scamming that beset trading on Diablo 2. In order to steer players towards Auction House, Blizzard dropped the loot rate in the game to the amount that equipping your character became a thankless grind and the game as in general was uninteresting to play cheap Diablo 4 Gold. The auction house that was a snobbery was eliminated and drop rates went up in 2014 Diablo 3 instantly became more entertaining, even before the innovations of the Reaper of Souls expansion lifted the game to a classic level.