Cool, but I doubt it will work as more than the brain is at rest during sleep. The major organs like heart, liver, etc. all rest and recover during sleep. Sleep apnia keeps the CO2 levels elevated preventing organs from the recuperative benefits of sleep. I use Breath Rights for this reason; i.e., to allow full exhale/expulsion of CO2 to allow the body to rest.
Breath-Right is excellent enhancement for natural / essential breathing mechanism, not just for sleep apnea. I use them whenever my nasal passages feel blocked, especially during the colds or sinusitis.
You mentioned Modafinil, which is also described in this article, along with orexin A, as new, less harmful substances to organism and with fewer other side effects than older, better known ones.
Of course, as you said, biology and organic chemistry being as they are, all these are just temporary solutions to temporary problems or circumstances.