You should just remove the Outrageous Accent card from your deck for the cafe setting. It's not like a lot of other cards are dependent on it... I guess you might want to remove the singing card as well, and the Action that cancels those out (Too Silly, or No Singing, or whatever).
I typically take basic Fluxx (my promo card heavy deck of course. *grin*) whenever I might have a chance to play.
I really love Martian Fluxx and MP Fluxx, but have found it is easier to talk people into playing the various flavors of Fluxx if I start them off with a game of the original. Silly Humans ~.^
I wish I had been able to play with the Pirate Deck last Origins (stupid new job training =p ) but knowing me I'm sure it will be on my list of must have Fluxxen. It does make me wonder if there will be a Ninja Fluxx and if they do make if there would be a way to have the pirates and ninjas battle it out. *mischevious grin*
I tend to start people with Monty Python or Zombie, depending on their interests. I don't see a hierarchy that requires one to learn the vanilla game first.
Otherwise, I just keep my 4 favorite (Monty Python, Zombie, Martian and vanilla) in the gaming backpack to see what I can get played. Only in late September and October (leading up to Halloween) do I push more for Zombie and Martian Fluxx.
Your groupings pretty much match mine; using basic Fluxx (promo laden, as with Ms. Dillon's!) and adjusting as I feel would be 'appropriate.' I sorrow that I've yet to teach Fluxx of any kind to anyone under 18, but should I do so I will consider trying EcoFluxx on them first instead.
Zombie Fluxx I generally reserve for those who've got the game down. Dealing with so many Creepers is tricky business!
Although I really don't like Zombie movies, I think Zombie is one of my favorites. It plays similarly to Martian Fluxx but I like it a bit better for some reason. Monty Python is also great, and Pirate is probably shaping up to be in my top three as well.
I like Eco and Monty Python Fluxx. But the basic one is probably the best. I like to play with high school kids. And as a teacher, i use Fluxx system (Goal = Keeper + Keeper, Beware the Creepers etc) for reflexion at the and of topic.
With older players we prefer the basic Fluxx (4.0) and with preschool children Fluxxentration (with Eco cards) we call Fluxxeso...
Basic Fluxx to teach anyone new how to play
Eco with my brother except we mix it with the original to create a jumbo game.
Stoner with, well, you know.
MontyPython with adults who have seen the movie and understand the jokes.
Zombie with friends, and usually my nieces and nephews who think zombies are just silly.
Martian when my friends and I just want to capture humans for the day.