Mal,
I was going through your posts and I came across this
those may have become irrelevant, like folding the pants before Namaz (done in Saudia) and things like that, and those which have no religious significance
Did you ask somebody why they did this?
Here are a few hadiths from the prophet Mohammed. (and according to me they are relevant today and will be relevant till the day of judgment, even if for nothing else then for the fact that they are from the prophet saw)
Hadith - Al-Muwatta 48.12, Similar narration in Abu Dawood #4082
Yahya related to me from Malik from al Ala ibn Abd ar-Rahman that his father said, "I asked Abu Said al-Khudri about the lower garment. He said that he would inform me with knowledge and that he had heard the Messenger of Allah, may Allah bless him and grant him peace, say, 'The lower garment of the mumin should reach to the middle of his calves. There is no harm in what is between that and the ankles. What is lower than that is in the Fire. What is lower than that is in the Fire. On the Day of Rising, Allah will not look at a person who trails his lower garment in arrogance.' "
Hadith - Sahih Al-Bukhari 7.678, Narrated Abu Huraira, r.a.
The Prophet (saaws) said, "The part of an Izar which hangs below the ankles is in the Fire."
Hadith - Sunan of Abu Dawood, Narrated AbuJurayy Jabir ibn Salim al-Hujaymi
The Prophet saaws said, "Have your lower garment halfway down your shin; if you cannot do it, have it up to the ankles. Beware of trailing the lower garment, for it is conceit and Allah does not like conceit."
Folding up the hem because your garment is too long, is forbidden. Pull the trousers upwards, instead. (hint: hard to do if your pants are too tight to start with!)
Hadith - Sahih Muslim #5200, Narrated Abdullah ibn Umar, r.a.
I happened to pass before Allah's Messenger (peace be upon him) with my lower garment trailing (upon the ground). He said: Abdullah, tug up your lower garment. I tugged it up, and he again said: Tug it still further, and I tugged it still further and I went on tugging it afterward, whereupon some of the people said: To what extent? Thereupon he said: To the middle of the shanks*.
*The part of the leg between the knee and ankle.
Said Ibn 'Abbas, "The Prophet ordered us to prostrate on seven bodily parts and not to fold back the hair or clothing: the forehead, the hands, the knees and the feet." In another wording, the Prophet said, "I have been ordered to prostrate on seven bodily parts: the forehead, and he pointed to his nose, the hands, the knees and the ends of the feet." (Related by al-Bukhari and Muslim.) In another narration, he said, "I have been ordered to prostrate on seven bodily parts and not to fold back the hair or clothing: the forehead, the nose, the hands, the knees and the feet." (Related by Muslim and an-Nasa'i.)
So something that was practiced by the prophet should never go out of style.