You are right that Perl lacks (or discourages) certain things from other languages, so maybe the feature-rich distinction isn't so important as the TIMTOWDI distinction. Many languages try to do everything with one or two key tools. Because Perl borrows tools from so many other languages, I still question whether it has its own accent.
You can look unfamiliar with a language without having another language's accent. Of the things you list, throwing things in a hash might be one that is distinctively Perl-tinged — something that might make someone who reviews your code say, "You're trying to write Perl in Mumble!"
Caution: Contents may have been coded under pressure.