My thought would be to create a whole new algorithm dedicated to such types of delays. That algorithm could include an underlator type of mod and thus creating some killer movement across a stereo field. The question would be, how to create an algorithm that is also different and useful for people running mono set ups. (If Eventide keeps on this path with killer H9 algorithms, then Eventide will become the stompbox to have. Sculpt has really up the bar).