I feel like adding a bit more brainfuckery would help obscure stuff. Make people use Church numerals to form ASCII characters - it'll encourage golfing it down to something equally as obtuse as

    ++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++.