Thanks, and lots of good questions. I guess it's both a new language and an interface. It's certainly not based on any others. I did write a bit about the thinking behind it here https://letset.ch/why. Im not quite sure whether it will be a commercial product yet it would be nice to be able to spend my time working on it but I have to pay the bills somehow. If I can I would like to keep it free to use and possibly make it open source.