We need basis to evaluate BIM model development of consultant hence LOD has been chosen as it is widely accepted at this moment. Eventhough, LOD can be interpreted differently by BIM practitioners. However, at this moment we need baseline as I mentioned earlier to assess BIM models, therefore JKR need to clearly explain our interpretation of LOD requirements to avoid confusion. As for now during Design Stage only involve LOD 200 and LOD 300. From my opinion yes, we need LOD unless there is better way to assess model.