I'd originally envisioned that the function returned would be more strongly typed (ie. it would expand to (fn (x y z) ...) if foo takes 4 arguments) and that the function would be truly curried, so ([foo bar] baz) would also be a curried function if foo requires more arguments.
Now I think about it, the solution you've given would be perfectly adequate. The function will still fail on the wrong number of arguments, and I almost never need the other feature at all. It would also play friendly with optional and rest arguments.
