I write little about that,who dont know about that:
Scennative aka Scenna has created the best mod I've ever played. The mods name is Chaos.
It's pretty hard to describe this mod as it has a lot of cool features. I'd say it's a mix between the best mods you've ever played, combined it's best features and added several new game features. I will post a few of these features, as Scenna has made a few videos about it.
The homepage of this mod is www.multi-clans.de
New features:
New HUD -
New weapons
New sounds
New options
New blood effect - http://de.xfire.com/video/3bd732/
Flashbangs - http://de.xfire.com/video/3b666b/
And many others. If you want to see them, download his alpha testing release on the website.
My suggestion is, to make a server with this mod when it's officially released in 2011. I predict this mod is going to be one of the most popular ones.