Would be cool if you could allow the ranks to be changed, and have a few mods that could spectate matches.
People decide on the date and time, then they can gain/lose points based on tier difference.
Kind of like
www.GameBattles.com, but in this case it's all community help.
If you could get around 10 mods to just add a change of points to players' rankings, and if you could revise them, after all matches have been finished daily, then it could be a nice ranking system. Player-hosted nontheless, but still fun. Gives players a chance to prove that they are better than silver/gold.