More significantly, one of the projects I've been working on really requires a new language, and while I could implement using, say, PyParsing and so on, having free JIT is really nice.
Can't wait to see a lisp on the Python platform.
One thing I would be interested in hearing that I haven't heard anyone mention is how far it seems like a language can reasonably stray from Python without essentially hitting its head on PyPy at every turn. For example, functional languages have a hard time on the JVM due to its lack of tail call elimination.
But yes, I'd be interested!
Don't get me wrong, I'm not poo-poohing the capability. Instead, consider it the warning of someone whose been down the road before.
The problems won't be technical -- they'll be social!