Custom unit idea: Future Retro Transient clone

I been watching and listening to some Future Retro Transient demos and considering getting one, but after watching this video “Future Retro Transient Functions and Signal Flow” I realized the er301 should be very capable of setting up pretty much the exact same thing.
i havnt looked into/figured out how to make my own custom units yet, but was thinking it would be fun to try setting up, or at least a chain that functions this way (although i would add pitch control of the sample, add add randomness and cv to effects too)! i may look into setting up a custom unit like this unless someone beats me to it!