The one topic that I had not previously thought about was having asynchronous content. Having to give feedback to students in two (or more) different units seems possible; however, the possibility of the faster student giving answers to slower students would lead to having a larger reliance on tests and quizzes for grades. You then would run into the issue of having quiz and test questions being given out to the slower students. If this became a problem, then having a randomized questions from a bank for tests/quizzes may have to be considered.
