I have seen plenty of people requesting things and I would like to point them out to the moderators of Khan Academy.

1. Backgrounds

Ever since Khan Academy removed backgrounds from profiles, there have been riots of requests spiking up in the help center.  Some of the moderators claim that it is distracting to some users to have backgrounds, but honestly, is that the truth?  If earning achievements were distracting to users, badges, energy points, and avatars would have been removed all together.  The API still exists for backgrounds so hopefully, just hopefully one day, backgrounds will return.

2. Dark Mode

Dark mode has been one of the top requests in the help center.  Almost every single page in the requests has someone desperately crying out for dark mode to be added.  Lots of people are doing their best to learn on Khan and adding this feature will be something that satisfies hundreds of thousands.

3. Python Programming

In about 30% of all Computer Science requests is Python.  Supposedly, python is quite simple to add into a website.  In this article, it explains that python can be added into a website with only thirty lines of code.  https://intuitiveexplanations.com/tech/replit/
The github repository is here: https://github.com/raxod502/python-in-a-box
Even if a simple console could be shown with a python environment, many more users will learn coding.

4. Improved Communications

Lots of complaints have risen up in the help center about communications.  Khan Academy uses neither Websockets nor multiple API fetches to update notifications.  As a skilled web developer, the problem can be solved by fetching the notification api of a user every minute or so.  This will not decrease the performance of the site in any way and everyone can communicate a bit more in realtime.
Many voices have attempted to make this feature a reality in requesting for improved collaboration, direct messaging, and more.

5. Return the Old KA Badges

The trend to bring back the 1000 Kelvin Khan Academy badge has long passed but deep in the hearts of many programmers, I can see how much they miss this badge.  It's not just that particular badge that everyone wants, but all the other old ones.  It seems as though after Khan Academy changed logo and color, everything went downhill.

I did not make this post for my own desires but for those many thousands of people who have seen the ancient and once legendary Khan - The one and only Khan they've ever known.