You do have that in combination with indent sensitivity. But you can't rely on it with compound exprs and outer parens. And I still think it's klunky. Try it without the quote, or with nested parens in the operands.
I still think it looks fine. And yeah, I'm not talking about wart in specific: Nulan hardcodes + as an infix, so it won't work nearly as well with wart's system.