Although modesty is equally important for both sexes but when a man feels it, imagine about women who require to conceal their body contours. Namaz which is Imam/man-made is certainly immoral.
Respected Dr Shabbir's research is right on the dot.
Is Physical Prostration Immodest? The Mode of Salaat Prayer:
Hasan Basari said that physical prostration was forbidden for reasons of modesty since the Salaat prayer used to be only congregational in the Masjid with men standing on the left side and women on the right. The Salaat prayer used to begin with people standing behind the local Emir (governor) and it was completed in that posture. The Emir recited only Surah Al-Fatihah OR a few other verses relevant to the situation. Then he went ahead with the issues about community welfare and public affairs. When the assembly was adjourned, people dispersed and worked on the agreed upon decisions while engaging in their jobs or businesses. Incidentally, that also indicates that Friday was never a holiday during the early noble era of Islam.
[About physical prostration, also think how birds and other creatures would conduct their Namaaz if their Salaat is to be understood literally.]
FUNERAL PRAYER: For the sake of clarity, we can say that, according to the most ancient sources, Namaaz or ritual Salaat was observed more like the congregational funeral prayer is conducted today – one raka’at (unit) standing.
24:31 And tell the believing women to lower their gaze, and guard their modesty. They should not show off their adornment beyond what may be decently and spontaneously apparent. Let them cover their chest area with a light covering. And let them not their attraction be apparent to any but their husbands or fathers or husbands’ fathers, or their sons or their husbands’ sons, or their brothers, or their brothers’ sons or sisters’ sons, or their women folk, or their close dependents, or such male attendants as are beyond all sexual desire, or children who have no carnal knowledge of women. And they should not strike their feet or swing their legs in walking so as to draw attention to their hidden beauty and ornament. O You who have chosen to be graced with belief! Turn all of you together to God so that you may be successful (in establishing a benevolent society). [33:59]
33:59 O Prophet! Tell your wives, your daughters, and women of the believers that they should draw loose-fitting outer garments around their person (when in public). This is easy and proper, so that they may be recognized and not be bothered. God is Absolver of imperfections, Merciful. (24:31)
[Jalbab = Outer garment = Overcoat = Lengthened dress = Chadar = Shawl = Loose-fitting garment = Modest dress. Body Parts Women Can Show In Public: Face, hands and forearms, heads, feet and ankles as during ablution. See 5:6.
A Hadith that agrees with the Qur’an: Ibn Umar said that during the times of Rasoolullah (S) men and women used to do Wudhu together. – Bukhari, Kitabil Wudhu]