Ah what a great thread.
Paul's teachings to me are a paradox; he obviously cared much for the brothers, worried for them, worked for them; yet, he sought to control nearly everything he touched. I don't mean to introduce modern behavioral ideas here, but consider: Paul had something to say about EVERYTHING; he did occasionally offer the disclaimer, previously noted, but the idea that Jesus took the law out of the way only to be replaced by a new set of rules from Paul is anethema to the freedom that Jesus life and death gave.
At least, that's how I see it.
Granted, it means a lot less orderly congregation; it is not as easy to control the fellowship when you can't fall back on Paul's idea of excommunication and then apply it to every behavior you don't like, including but not limited to smoking, oral sex, dissent, holidays, blood transfusions, divorce and remarriage, etc etc etc.
But then, was it Jesus idea for neat little congregations of controlled believers to exist? Would it be OK for believers to come up with their own ideas for living a christian life, and to somehow show their beliefs to others?