Not an immediate request, but something that might be considered for future enhancement...
I know that Dyalog has an "option" operator, and I've been seeing more and more places where I could use such a thing to pass controlling information to my utilities, so that I don't have whole families of them that do similar things with slightly different features. Might there be possibilities in the future where I could pass optional controlling parameters to functions, without changing their (already overloaded) syntax, to allow them to dynamically adjust their behavior?