Continuous Drag with Increments
This may overlap with requests for horizontal scrolling and drag direction but it may solve both.
Drag currently only works between two states and in one direction. It would be nice if several artboards could be used with the same drag. For example: think of a carousel with multiple images shown horizontally. I don't want to have to click+drag each time I want to advance. It would be nice if I could click once and continue dragging until the specific image I want is centered. Letting go would snap to that artboard. During the drag it would transition through all of the artboards in-between. It would also need to be reversible.
I love auto-animate and drag by the way.