Any language claiming to be a fast Lisp should be required to show benchmark comparisons against SBCL and a few commercial Common Lisps.
A native compiler for Clojure would be an interesting project, but completely new languages competing on speed or size are going to have a really tough time beating the existing Common Lisp implementations, not to mention the CL library ecosystem.
Not to say the CL library world is very big compared to Python or Javascript, but it has most of the important bases covered, and it's certainly bigger than a brand new language like Pixie.
A native compiler for Clojure would be an interesting project, but completely new languages competing on speed or size are going to have a really tough time beating the existing Common Lisp implementations, not to mention the CL library ecosystem.
Not to say the CL library world is very big compared to Python or Javascript, but it has most of the important bases covered, and it's certainly bigger than a brand new language like Pixie.