Based on my experience working on a couple different online homework systems, it's actually a hard problem to determine what kind of wrong answers belong to wha

Based on my experience working on a couple different online homework systems, it's actually a hard problem to determine what kind of wrong answers belong to what kind of conceptual difficulty, even in mathematics. These systems rely on humans to curate the conceptual difficulties associated with each problem separately, but those lists are never complete and often just confuse the student further. Some systems don't even try to do what you're suggesting, and just give students the "right" way to solve the problem at hand after a certain number of attempts. These are by far the worst, as it's painfully easy to game the system.