A few points

I don't think this will be of much use now. I was just browsing the board and thought I'd clear up a few doubts.

I'll try and answer your questions to the best of my ability. I created an imdb account just to answer this question :) please be gentle.

Regarding a remake, I don't know if its a good idea. Old Indian films are classics (an art form back then). Now, its all about how much money a film can make. Remakes do not do justice to the originals - true of Hollywood and British films as well. I don't know if you watch Hindi films often. If you do, compare "Sholay [1975]" with its remake "Ram Gopal Verma ki Aag [2007]". Spoilt a classic.

Regarding culture, the film is set in a traditional Muslim household wherein intermingling of the sexes among unrelated people is discouraged. The thing is, people who are not related to you, you are expected to be a bit modest and reserved, about everything - the way you talk to them, way you hang out with others, etc. You must have heard about burkhas and veils. The same as in Christianity, Muslim women are expected to cover their hair when meeting people not directly related to them.

Regarding dancing, again, in Indian and Muslim culture, a woman is the honour of a household. Any activity by which she goes against the culture brings disrepute to a family. Agreed its not lap dancing or stripping, but dancing not as a hobby but just for money. Considered almost the same as the other two with regards to earning just money.

Anwar and Husna's meeetings - Unrelated and unknown people, meeting for the first time. Just like the veil, screens were used earlier to separate unrelated people. Take this into context - the actress hiding behind the hanging screens in the piano song.

Rules regarding burkhas - Ideally, a burkha is a loose fitting garment, worn so as to conceal a woman's figure. It is worn so as to avoid people gazing at your body like starved vampires.

Regarding covering one's head - as I mentioned earlier, Christianity and Islam (I believe Judaism too)have the same concept of covering hair. A woman's hair must not be visible to others. Some Muslim women choose to cover their face as well as their eyes. Requirement is just to cover the hair. Visibility of the face, just like a Christian nun, is perfectly fine.

Bells on ankles - Dancers wear summat called ghungroo. A metallic belt which has got small stones and worn like an anklet and makes same sound as hand percussion (the shaking kind) instruments. Ghungroo is typically a dancer's accessory.

'Wear bells on her ankles' - he meant to say she donned a ghungroo (turned a dancer) for him, to raise him up when they had no money.

Separation of men and women - Normally it is supposed to be different seating for men and women. They didn't take it into account for the theatre scene. Also the song was supposed to be a promo for the film. I guess the director did not want people to be discouraged about seeing film about Muslims.

Anyway, I hope I have answered your questions. I am not a scholar, I tell you things which I know and follow.