Answering here so everyone in this thread can see: The most obvious one (and, admittedly, the one that immediately comes to mind at almost 3AM) is their exclus

Answering here so everyone in this thread can see: The most obvious one (and, admittedly, the one that immediately comes to mind at almost 3AM) is their exclusion of non-linear patterns. It didn't reduce complexity, yet made the language worse for the purpose the professor stated in an obvious way.