Khan Academy is always looking for new ways to improve our site! The best way to get visibility on your feature idea is to go to the Support Community section of our Help Center. You can also find a link directly to the Support Community here.
You must be sure to be logged in to Khan Academy to submit feedback on the Help Center. You can see if someone else has already suggested your idea and if so, you can add your votes to it and comment. If no one else has suggested it, you can be the first and others will be able to vote up your idea!
Thanks for your interest in improving Khan Academy!