Hello everyone! I need your help. I am currently writing my problem statement proposal for my final thesis.

There are two ideas that now are running into my head, and I would like to know your opinion.
1. Develop a KPI based on Braveness/courage/(additional synonyms). This may be an interesting subject, especially when defining the variables we should take into consideration. It is a little bit scary so I was wondering if you have any idea on what your path would look like if you were the ones that had to investigate in the matter.
2. The influence a yellow card can have on a player / team / match.
These are the ideas I had to make my thesis more "unique". What are your thoughts? Additional topics (also related to VAR, especially considering that it is a novelty to be discovered) or further considerations are well appreciated.
Thank you!