Although I am just a newbie here and haven't been on this site for long enough, as a user, I really found this thing to talk about and would really like to get implemented.
As I said earlier I am just a newbie so, it's obvious that I wasn't able to solve a problem and hence looked to the editorials, and yeah sometimes editorials have long enough and complex enough proofs that I am not able to get it at all.
... Maybe I am weak in English and Maths too(Obviously :)...
So, what do I do? I generally search for the solution to the problem on YouTube and yeah it helps a lot.
But sometimes they don't have the proper understandable enough solution (for me at least).
So, I go down to the comment section of the editorials section in order to get a better understanding of the solution. And it's sometimes hard to find the perfect comment for my queries and also hard to find a comment referring to the problem which I was looking for.
So, I guess it's a good thing to have a different discussion section for a particular problem of that particular contest.
I hope I didn't waste your time and suggested a good enough suggestion.