Destinations can be expressed against edges or centre rather than hard-wired transforms.
Destination model
Geometry belongs to state.
Position, size, scale and rotation are authored as destination properties. The transition simply interpolates between two complete spatial descriptions.
Destination geometry
Position, width, height and rotation all change while this content stays attached to the same object.
Layout width/height and presentation scale remain separate.
Rotate Z/X/Y can interpolate with position and size when Slide is enabled.