Most brokers have copied the base from someone who sold them cheap software as the base. Almost all discount brokers have software that is not sufficient for trading. Also, the charts are not at all reliable.
Some developers should start something free/shareable on github.com or maybe some discount brokers need to come together to get this done rather than each broker trying out their own improvements. They need to adopt some FIX protocol standards. NSE tried doing something with NOW software but it has not become a standard.
Comparatively traders in USA, UK and EUROPE have much better options and therefore their market leads the world. Here there are too many restrictions to do anything ...