Deprecations for PHP 7.4, preparing named args

Hello, I was reading https://wiki.php.net/rfc/named_params again. Named args would be great for 8.x. Following https://wiki.php.net/rfc/deprecations_php_7_4, would it make sense to deprecate calling call_user_func_array with associative arrays, so that it can be made to work with named args in 8.0? Another option would be to deprecate call_user_func_array altogether and recommend using the splat operator instead. WDYT? The named params RFC also tells about "Signature validation allows changing parameter names", adding a requirement to keep the same parameter name in child classes. Should this requirement be added to 7.4 with a deprecation notice? Are there other things we should deprecate to make room for named args? Just throwing the ideas so we don't forget considering them, thanks for reading. Nicolas