Gold-plating the Deliverables
Most project managers want to placate the customer. However, there are limits as to how far the project manager should go. Gold-plating the deliverables after the scope has been agreed to can be very costly. In addition, the customer might be led to believe that they can get these gold-plated “add-ons” for free on future projects because the new standard had been set. Do not fall into this habit as it will inevitably will come back to haunt you.