Dryer intakes from ceiling

Heating elements are the biggest energy hogs in the house. Dryer is one of the worst. The silliest part of the dryer setup is that it pulls in cool air from beneath the dryer to heat up in the dryer coils. Why not pull the dryer intake air from the ceiling where it's hotter already? A flat duct, painted to suit of course, runs warmer air from the ceiling down into the dryer. Not rocket science, but requires a bit of an aesthetic workaround.