In the midst of all this yelling about the moral character of people who do or don’t want this feature, can I just state the obvious here?
ANY knowledge testing system is going to have some (seemingly arbitrary) rules built into it, and as a result any such system will also be testing your ability to follow the rules (as well as your actual knowledge).
Teachers (human or computer) can’t read minds. We can only monitor your learning based on what you say/write and only if you give us useable input. I’ve seen so many students flub exams because they didn’t read the instructions, didn’t answer what was being asked, and when they say “but I KNEW it!” all I can say is “but you didn’t SHOW me you knew it!”
So yes if it’s doable program-wise, I’d love to see WK give an extra warning wiggle (it already does that if you put kana in the meaning field or romaji in the reading field).
But let’s not accuse people of being sloppy personalities or robot sycophants cuz at the end of the day there will always be some element of arbitrariness that the learner will have to pay attention to and follow. That’s the price we pay for not being telepathic robots.
 This is a shocking and close-kept secret! I may get into big trouble for telling you about it!
 Especially for computers. Human teachers can at least try to figure things out from context when students start writing about the “Japanese Candy Pictographic System” or whatever.
 Most of us, anyway. I mean, I don’t want to make assumptions about all of you.