I don't know if anyone said this already, i got a little hasty when i was reading the third page in the thread and read parts of what was left to read.
I think pipes is a great idea, and i don't see any reason not to use smoke instead of bubbles. Every time a kid watch tv he probably see someone smoking, at least a few times. It's nothing they aren't used to see! PS is not made to teach kids what to do and not, if it was there wouldn't be weapons in the game. I would really like to see ppl having tobacco stores where they have collected herbs, mixed it with tobacco and possible it could give a effect on the player. It's crazy to not have it in the game just bacuse there's a chance amreicans don't like it. (Yes, there are possibly other ppl not liking it but americans are the worst after what i've seen and heard) Take GTA for example. When it was released some ppl didn't see it as apropriate so let their kids -16 or something play it. Then a guy found out there was a hidden sex scene in the game and made a patch to unlock it. That made every american to go nuts on the game. Rockstar was sued a few times and had to remove the hidden scene from the game and cough up some cash.
A game where the goal is to kill everyone and steal cars is being blamed for a SEX SCENE! That's carzy and i think that smoking in a fantasy game is stupid not implent. Don't mind if a mom or two gets angry and forbit their kids to play the game. It's their job teach their kids that smoking is bad, but is common and that no one knew that it was dangerous a thousand years ago.
How about implenting a mini sex game too?

Go for pipes with smoke!