1. A standard backup camera (much cheaper vehicles have it). If not, at least make it a standalone option so one does not have to pay for the expensive tech package just to get the camera

2. Better isolation of the engine bay on diesel models for less engine noise (owners of such vehicles correct me if I'm wrong, but I think all other manufacturers' diesels are quieter than the X5d)

3. Fix known reliability issues (DEF, battery drain, comfort access quirks, etc.)