I had a similar infatuation, including Mira for Max. I aspired to make multitouch x/y controllers in each of them, then got bogged down. That was a few years ago now. Recently, I’ve started having warm thoughts again, esp. about Lemur, potentially as a large® format controller for audio effects while I’m playing viola. Not sure if I’ll actually dive back into that (it has some advantages over Mira, apart from it’s visual attractiveness), but it’s been on my mind of late.