Why isometric 3D model is too simple in illustration?

Isometric 3D models often seem simple in illustrations because their fixed 120° perspective and equal-axis scaling eliminate depth cues like foreshortening. This projection style prioritizes clarity over realism—objects don’t shrink with distance, so details feel flat, which works for technical diagrams (e.g., product manuals, floor plans) but reduces visual complexity. To add subtle depth while keeping readability, try soft gradients or minimal shadows on isometric models.