Alienscript is just a thought experiment.
Maybe some day in the future it'll become real, but please don't ask when that will happen. I have no idea.
Now that we've got that out of the way:
This sounds simple at first (Lisps aren't too hard to make) but the "suitable for using in a modern website" requirement makes things much more difficult.
It needs to feel like a Lisp.
Please leave comments on this wiki with your thoughts!