My Almameter seems to be doing that this year in their Design Patterns Course. The task is to find a large code base that desperately needs refactoring. I let a young friend use my old Final Year Project for this. Its scary how bad my code was when I graduated (never took Design Patterns) but at the same time, inspiring to see how far I have come since then

I had one course where one of the major projects was to add a significant feature to the major project you wrote for the last course.

That's a rather brilliant idea. Including code review from your classmates.