If you liked these courses, there is a good chance that you might be interested in doing a thesis on Human Aspects and Empirical Software Engineering! Descriptions of possible thesis projects (both at the BSc and MSc levels) can be found here.
Three of these courses (NWI-IBI001, NWI-IMC021, NWI-IMI004) are held in the context of GiPHouse, a student-run company developing software for real customers.