Wow this is awesome, nice job!! I'm super excited to play with this, and it's something that I sorely missed from C4D. I always wondered if Houdini would get some kind of mograph toolkit after seeing Rohan Dalvi's Recreating Mograph series. I even tried to implement a similar "Grid Cloner" HDA a while back so I wouldn't have to keep re-remembering and reading up on how to randomize @orient and @N / @up (I still don't "really" understand quarternions, for that matter). Great stuff!