Every Research Scholar is faced with this situation, I have spent 15 years in this aspect and have supervised many M.Phil and Ph.D. Students. Stay in touch for my feedback on what you are thinking on this vital issue of research.
Faisal - for me - I think that HDR students should choose their topic on the basis of interest, feasability and impact. HDR theses are 'long hauls' - so it has to be a topic that keeps the student motivated, interested and focused over a long period of time. They also, as best as possible, want to see pragmatic results that actually 'make a difference' - not just in increasing the existing knowledge-base , but also in impacting practice - both actuallly and potentially. Of course - students often have a fixed idea of the topic, methodology etc even before the enrol. It rarely turns out exactly as originally planned - but that is part of the overall journey (aided bu supervisors) in steering and refining the topic and its various questions.
Your question itself is a new research topic. On the other hand, whether there are many ideas and opinions about this subject or no, in my personal opinion, and very briefly before choosing the title, we need to define the problem statement of the research and the goal of the research. Then we should be choose our topic with brief and express the solution of the problem smoothly, to have been understood by the reader.
Research topic need to be chosen such that there is sufficient scope for improvement in proposing solutions to some problem(s), keeping in mind the time frame available to the researcher. This means that even if there is a good problem at hand, it does not necessarily mean it is a good research topic for the researcher if he/she cannot add something new to solutions already proposed by others earlier. Generally it is a good idea to look for relatively unexplored areas.
In my opinion there should be a real problem arising with a real knowledge gap which interest the researcher. Moreover, it should be feasible and contribute to the society in one way or other.
Now, let us divide the larger question into the fundamental question, i.e. how to formulate a research question (RQ).
In my opinion, the FIRST step should be to select a concept about which we are trying to formulate a question. This concept is going to be the central/main concept about which we will formulate the RQ. This will initiate your reading agenda, and only after extensive reading, we can formulate the importance and interesting question of academic and practical interest.
Let us first agree on this FIRST step, then we can discuss it further.