Rating system for challenges

You have a huge (and quickly growing) library of new challenges now - that's really great! Scrolling through it reminds me of browsing a streaming library or something. I feel like it would be a nice addition if kids would have the option to post a rating (with a review, could be short) for any of the challenges that they finished (or have been working on for a while). That gives you a social engagement aspect that's currently missing from the challenges (posting a review on the feed invites engagement in a way that posting a badge doesn't), plus feedback to improve the challenges when possible, plus a bit of writing/reflection practice for the kids. Just don't make it mandatory, in the way that the class rating request just keeps popping up forever for a kid who doesn't submit one…