Im a student at Sri Lanka institute of information technology and I am reading for cyber security BSc. I'm supposed to do a research project with a group of four people within an year. We are preferring to do our research project in bitcoin domain. We are supposed to come up with a software component which will address an existing issue in current bitcoin system. Please provide us with some opinions to come up with a valuable idea on our research project. What is a good critical issue to address? Any suggestions to address that issue? Thank you.