I work in a high volume peds PACU and see emergence due mostly to the use of sevo as both the induction and maintenance anesthetic for shorter cases. Our anesthesiologists will often give a small bolus of propofol or fentanyl at the end of the case to keep them asleep for 10 or 15 min following extubation. I find that patients who sleep for about 15 to 20 min following extubation wake up better, assuming their pain is under control.
I have also read that pain can sometimes contribute to emergence, so we do also give some form of analgesic along with a sedative as treatment. I agree that patients who are delirious but then "knocked" back out for a short nap, usually wake up more socially appropriate.