I often wonder what could have been if cyclone got more adoption. I don't really think "rewrite it in cyclone" would be any more successful than "rewrite it in rust" but "incrementally port it to cyclone" could have been faster.
[1] https://www.hillelwayne.com/post/influential-dead-languages/
https://en.wikipedia.org/wiki/Cyclone_(programming_language)
The UNIX's "AT&T Labs Research".