I think I have found a minor flaw in your concept for a sleeping pill. I have outlined Pro's vs. Cons below.
One night of good sleep
Possible side effects include ... Abnormal thoughts and behavior, more outgoing or aggressive behavior than normal, confusion, agitation, hallucinations, worsening of depression, and suicidal thoughts or actions, memory loss, anxiety, severe allergic reactions, swelling of the tongue or throat, trouble breathing, and nausea and vomiting, unpleasant taste in mouth, dry mouth, morning drowsiness, dizziness ,headache, symptoms of the common cold, Getting out of bed while not being fully awake and doing an activity you do not know you are doing. Get emergency medical help if you get these symptoms after taking LUNESTA. You may still feel drowsy the next day after taking LUNESTA These are not all the side effects of LUNESTA. Ask your healthcare professional for more information. Do not drive or do other dangerous activities after taking LUNESTA until you feel fully awake.