It would be very handy if we could link discussions from two or more courses within the same semester.
Possible scenarios why: if we offer an on-campus course as a DL course, I place the students in separate course instances in order to distinguish this on their transcript - yet, it would be really cool if the DL students and on-campus students could dialogue together in the same discussion.
Or for example: a class might be a combined class between two degrees (same lectures and discussions, but different assignments). They are given different course codes, but can share same lectures and discussions.