That's a really good point. I didn't consider Ruby, but not for logical or very good reasons beside the fact that it never clicked between us (I'm the guilty here). I try to take inspiration from Smalltalk usability and broad ideas, but I'm not trying to fit exactly its object model.
Anyway, I should propose a small Ruby lib to easily connect to the network-bus to create neurons. I have one in js that I targeted in the first place as it's easy to get webcam/sound working there with minimal efforts, but a Ruby one would be cool!