Oh, I planned to post something about it in a few days, but since you're asking, I guess I should explain now. Especially because it won't take much time, as it's mostly going to be just another copy paste of one of my PMs.

I noticed how little level groups mean these days. There is no competition between them, group projects are extremely rare and new group members don't really learn from others. Some believe a group tag works like a guarantee of quality, but imo, in fact most of us cares about individual creator who made a given level rather than the group he/she is in. So I had that idea to create a JCS ladder. Even for me that sounded kind of ridiculous at first (thoughts similar to the ones above), but then I managed to think of some rules and gathered opinions of active groups, and apparently this idea can work!

Rules I thought of:
Every 2 months, a level group submits one level of a certain gamemode*, made either by a single member, or a larger part of the group. These levels are rated by a chosen council** and each group gets an amount of points depending on the rating. By the end of the year, points are summarized for each group, and the one with the most of them wins.
*gamemode, obviously, changes each two months. I recommend starting with the most popular ones, like CTF, Battle and SP, then moving on to the less typical ones.
**I thought it'd include experienced players which aren't part of any group, like Gry, Veg, JJB, MS, etc., but due to some discussions this might be changed to the whole community instead (excluding members of groups). Obviously, it will be based on some external ratings rather than J2O ones, so people too lazy to write a review should be able to rate too.

Go forth and word-procreate upon this ‘forum’ upon which men from the ‘internet’ may ‘talk’ to one another.