User-generated static_assert messages would make it easier to build games that can be played entirely using compiler error messages. Something like this old IO

User-generated static_assert messages would make it easier to build games that can be played entirely using compiler error messages. Something like this old IOCCC entry but nicer: https://www.ioccc.org/years.html#1994_westley https://www.ioccc.org/years.html#1994_westley