Agreed.

I’d love to build an instrument like this.

I also wonder if it can be modded to be used as a pitch/mod wheel! That would be fun for some expressions.

I think this is neat! I happen to have stumbled upon Carolyna Eyck when looking for spooky background music for a tabletop rpg, and she is really impressive! I have no direct experience, but I think it has a distinctive sound and enjoy learning about it.