Just an anecdotal story. In the UK I was part of a charismatic church that evolved out of the Brethren Church. Every week we had a full house and the meetings would go for hours. There were no demands for conformity to dress codes although I would have to say that the ladies looked splendid in their outfits and did us proud.
Just around the corner was a Strict Baptist Church and we would pass the people walking to church (maybe they were not allowed to use cars). The men, in particular, all wore exactly the same outfit right down to the smallest boy. A white shirt, black tie, black suite, black socks, and highly polished black shoes and they all carried a black bible and their hair was immaculate and they never smiled.
We never saw more than about a dozen of them so I guess they did not experience a full house as we did. You can draw all sorts of inferences from that.
Well, on its face uniformity has its pluses. For example, in private schools common uniforms deemphasize selfishness and self-aggrandizement. In the military it is the same. It is the common goal that is emphasized--not the individual.
On the other hand, diversity is the strength of a society or of any group. To restrict individualism we do at our own peril.
A major movement here in the US was the Calvary Chapel movement in S. CA. Pastor Chuck Smith began to let "hippies" into his church, who were coming out of a movement that sort of "dropped out" of the establishment, to protest the Vietnam War and excessive materialism. The movement greatly expanded all across America, and contributed to a new kind of music, contemporary Christian music.
To let the Holy Spirit change people on the inside pastors needed to not over-emphasize the outside. Who cares how long the young men's hair was, or whether they wore blue jeans and went about barefoot, as long as they were responsive to the Gospel? God could deal with the inside, and eventually it would show up on the outside.
There is much to be said about not trying to take over the role of the Holy Spirit in changing people. We should indeed deal with moral issues. But the externals should not be over-emphasized. The person, to be sincere, must be allowed to make his or her own calculated and conscientious choices. Thanks.