That is a great point and one I never considered. What I have is a sealed oil bin that i can drain straight from the engine provided by my city. i call them up the day before garbage pickup and they exchange it with an empty one. Makes it super easy.
But I like the idea of an extractor to the jug with a twist. What if you drain it the normal way and then run the extractor from the drain pan to a gallon milk jug.