Um, ... is already an operator in Perl5.

Doh! Of course it is :-/

For the record, I'd rather have !!! and/or ??? instead of ... as I find their visibility much more in line with their importance

I'll second that. I find ... a little too innocuous looking for an operator which will throw an error unconditionally if executed. So ??? is probably the way to go since it's a syntax error if left unfiltered.
HTH

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broquaint