Looking for a topic for my master's thesis (ML related) • /r/MachineLearning

I'm a student business engineering and got the chance to write my thesis about deep learning, but don't really know what way to go specifically, I'm looking for an interesting and challenging topic/field to work 2 years on. The suggested topics are all around analysis of the stock market or simple image classification, which both seem a bit too boring. Stuff like wavenet are cool but can't see an implimentation in a "scientifically" paper. So, does any of you have some cool possible ML applications that I should take a look at?