Github issues are here.
After the release
announcment, by far the biggest asks were RFC-4180-compliant CSV, and
packaging (Homebrew, .deb).
String-oriented functions such as sub, and Miller’s
filter, could be made far more powerful if a regular-expression
library were included. Additionally, allowing RS, FS, and/or
PS to be regexes would be powerful.
Various other to-do items are listed
here.