Hi I wonder any chance for these features to be implemented in the near future? Here's how they work,
transform offset: you select a bunch of keys and move them around, they would automatically keep the offset, same would apply to the other things like transparency
motion curve: one of the great animating features in Aftereffects, its a very intuitive way to animate especially for something that follows along the curve, currently, there's no easy way of doing such in Spine apart from setting up the curve first and use constraint.