1. The article discusses the perception among MMO players that certain aspects of game design seem much easier than they actually are. One example given is the creation of quests, which players may assume is a simple task, but in reality, requires significant effort and planning to craft meaningful and engaging content.

2. Another area highlighted is the development of the game world and its systems. Players may underestimate the complexity involved in creating a cohesive and believable virtual environment, with interconnected mechanics and systems that function seamlessly. The article suggests that the seamless integration of various game systems is often taken for granted by players.

3. The article also touches on the challenge of balancing and tuning game content, such as combat encounters, progression systems, and reward structures. Players may not fully appreciate the iterative process and careful adjustments required to ensure a satisfying and well-balanced gameplay experience for a diverse player base.