Relying heavily on annotation guidelines for model performance may have potential drawbacks or limitations. One limitation is the dependency on human-created rules and definitions which may not always capture all variations or edge cases present in real-world data. This can lead to biases introduced through the annotations and restrict the model's ability to adapt to new scenarios outside of the annotated guidelines. Moreover, strict adherence to guidelines may limit the model's flexibility and creativity in understanding complex linguistic patterns that deviate from predefined rules.