1. The article discusses the problem with constantly adding new classes to MMOs, a practice known as "forever adding classes." The author argues that this approach can lead to a cluttered and overwhelming character selection screen, making it difficult for new players to choose a class that fits their playstyle. Additionally, the constant introduction of new classes can make it challenging for developers to balance the game and ensure that each class has a unique and meaningful role.

2. The article suggests that a better approach would be to focus on refining and improving existing classes, rather than constantly adding new ones. This could involve expanding the abilities and playstyles of existing classes, or introducing new specializations or subclasses within the existing class structure. This approach would allow for more meaningful class diversity and depth, without overwhelming players with an ever-growing list of options.

3. The article also discusses the importance of maintaining a clear and coherent class system within an MMO. The author argues that when new classes are added haphazardly, it can lead to a lack of class identity and a sense of confusion for players. By carefully considering the role and purpose of each class, and ensuring that they complement each other in a meaningful way, developers can create a more engaging and satisfying character progression experience for players.