Hi Khan Academy! Here's an optional feature: two-factor authentication with an SMS OTP. Not so much for safety as to teach the importance of the practice, for higher-stakes accounts like banking and email.

This practice is emphasised in the Internet Safety course, but it would be wonderful if KA encourages this in practice through its very features. Again, just an idea I'm sharing, I do think that priorities-wise, other features (e.g. dark mode) and content do rank higher.