Unicode in symbols are already supported: <https://play.nim-lang.org/#ix=3qqw> And I don't see it being misused too much. This proposal is just related to unicode in operators.
If someone wrote a package using Chinese or Hiieroglyphs extensivly they would immediately lose a big portion of their potential user base, and this fact I think is a good safeguard against miss-use of unicode. The idea of this proposal is to make it **easier to read science code**.