Difficulty in Scrolling Dragon Glasses

The Evan event used in KMS would cause serious problems in GMS. PSoK would not be an obstacle against hackers and gold farmers from creating multiple accounts to abuse the event. Making the Dragon Glasses only account tradeable prevents this. To offset the loss of purchases of PSoK, the success rate of the scrolls were changed so that people would encouraged to get the better scrolls that were added to gacha. As a result, Nexon stumbled across a more profitable method that didn't encourage a wave of hackers and gold farmers.

Somehow none of these reasons makes any sense to me. Here's my take:
- Promoting PSoK sale: Since PSoK will only be used on decent glasses, they will have to make those as available as possible -> 100% scrolls.
- Promoting Gacha sale: fucking everyone in the ass with account-restriction: rarity++; introducing rare but OH SO GODLY 50% scrolls in Gacha, combining with Chaos Scroll's malicious tendency => everyone helplessly coughing up mesos -> inflation -> massive gaching.

Introducing PSoK would not net much profit for them for the sole reason that no one would have any reason to PSoK any glasses with less than, say, 3atk.