What I have always felt that if our lawmakers only took the bylaws out of the book, it will be lot more easier for lawman to know what are they at and so will be for litigants those found lost in the jungle of complicacies of laws and bylaws.
In fact, the acts passed by parliament are not so elaborate. These authorize the executive to frame laws under the main act. This is called delegated legislation. also certain acts are on matters which are state subject or in concurrent list. State govts. also frame law on such matters. The delegated legislation is not totally unavoidable. In fact, often law framed under the main act is more in use than the main act. It is good to make law simple but there is limit to simplicity. Most simple would be to abolis all law and revert to Panchayat system treating 'panch' asd 'parmeshwar' whose opinion and not the written text will prtevail.
You are absolutely right the main acts only provide the framework and the administrative parts are taken care of by the rules and regulations formulated under the mandate of enabling provisions of the main acts. Judicial decisions taken by courts which come within the purview of the doctrine of 'Stare Decisis' also form a substantial part in making judicial decisions. There are conflicting rulings of the court of the same stature or by the same court. In India a good number of lawyers don't update their knowledge and exploit clients on procedural matters. Adjournment of cases on frivolous grounds happens to be the single most area of breeding corruption. A defendant with a weak case is allowed to get away for any number of years.
Give a particular case to 4-5 different courts simultaneously and you will come with different results with different arguments. This is happening because no one is sure about the by laws. they can turn things according to their own choice and anticipation. If this was not the case, why then judgments of different courts are questioned or quashed by other courts. It's a clear case of complicacies or the laws and bylaws have no clear meaning of their own. It all has been left to reach to a decision as found fit by a particular judge or lawyer telling the court.