I'm not sure if you were really asking for an answer, but I am probably the least qualified person on the planet to give you one :)

On the basis of my reading of the information in the link I posted, creole is a family of langauges with at least 8 major and 20 minor sub-groupings.

I don't fully even vaguely understand the mechanism (or more probably, classification) by which a patois transitions to a creole. Perhaps it is simply a case of how many speak it, or how consistantly it is spoken over time etc.

Your vague understanding trumps mine. In an effort to drift back to the OP's topic, I would say that cajun is still a good choice (and by extension, creole of any sort) since as they say down home, 'Laisses les bons temps rouler!' and with Perl, it is certain to 'Let the good times roll!'

--hsm

"Never try to teach a pig to sing...it wastes your time and it annoys the pig."