[li]

is it possible to just change syntax and keep the rest of ocaml system. For the syntax we can borrow ideas from Ruby or Python.

[anders0]

Well the revised syntax (http://caml.inria.fr/pub/docs/manual-camlp4/manual007.html) is completely implemented as a camlp4 (p5?) extension, so if you have enough patience you can write another extension to replace the syntax with whatever you want, I suppose.