Like I said it really depends on your nature of study but I think this can be used in sociology and psychology. What makes fiat more appealing to criminals or what is the correlation of criminal activities to crypto. If you could gather enough data and be able to present a compelling research, it would be of big help in the community because we can just cite you when we need to prove that crypto doesn't perpetuate an already existing phenomenon in our society.
If your nature of study is more about environment maybe you can research on environment-friendly methods that involve crypto like mining for example. Explain how or why crypto mining is not as harmful nor that it needs to be anymore to the environment.
If you are studying something related to political science, it is very relevant seeing as Trump just won an election after including bitcoin heavily in his campaign speeches and gimmicks. How does crypto now play into the politics and economies of each country? Does the power shift with the addition of crypto?
The possibilities are endless! There is so much to discuss about crypto and so much that it affects you can pretty much make a topic out of anything under the sun and relate it to crypto.