(This should be spoiler free, all of this info is available at the start of the season.)
In our game we upgraded the dispatcher with the Pilot upgrade to Direct Flight without discarding the card. Pilot seems especially powerful since the dispatcher can then move anyone to himself and then trade them that cities card.
Last night the question arose about could he Direct Flight another player's pawn without discarding the city card and without moving himself to that city, for example, moving the medic to a city with a cured disease to instantly treat it?
My instinct says that this is a legal use, as the Dispatcher ability says "Move another player's pawn as if it is your own" and his pawn has the ability to Direct Flight without discarding.