Dear Brother, I posted an understanding of saum by Parwez and it clearly says that fasting (no food or water etc in daylight is required.
As concerns salat, Parwez has a full list of what this is and he saw communal gatherings in some shape that we have namaaz today as a requirement. However, the physical aspects of salat are not present in the Quran so we must conclude that sujood is bowing our wills down to the divine commandments, obeying what they say and not a physical demonstration of this. When we are called to the mosques we are told from history that verses pertaining to a particular topic that was relevent at that time were read out and the muslims consulted on how best to sort the situation out. The Quran was implemented in their daily lives, not read for the sake of reading or blind recitation.I have never seen the point of reading the Book Allah has given us back to Him!
We all have our opinions but the Quran is not incomplete and if we study everything it tells us and implement them, then we have enough to do without needing to ritualise these life enhancing principles.
Your input would be most welcome