I've been independently doing the Javascript track. I've been waiting for feedback on my Forth-like solution for a couple of weeks now. I can understand why, since it's a volunteer effort, and mentored mode users are a higher priority. I am trying to resist the temptation to rewrite it until I get feedback on the version I originally submitted.

I haven't received any peer feedback on my submissions, either, and I've seen almost no stars or comments on any of the solutions I've viewed. There seems to be very little of either one. I think giving feedback is hard and deserves care, which is why I haven't given any myself.

These aren't intended as complaints, just observations on my experience. I've decided the main value for me is that it gives me a set of practice problems, and the opportunity to learn from other people's solutions.