Ability to have incremental transforms within interactions etc. for example you press a button and it transforms an element +20px in the X axis, you press the button again and it adds another 20px and so on. you would also add min and max transform values to this where the element could not exceed certain transform values.
you could also have it so that once the transform reaches a certain value it triggers another interaction.
I think this would be really powerful and lead to the possibility for very interesting interactive experiences.