I don't know tweaker-lovers have you noticed but there is fan made patch/expansion/whatever for Worms 4 mayhem and is called W4 Innovation.
http://i68.servimg.com/u/f68/11/88/10/20/logo10.png
More info Here (http://innovation.summerhost.info/main.php?lang=eng)
Big thanks to Iceworm for news

Doesn't look like anything has been done on it for over a year. :(
Also, why did he go through all the trouble of editing the interface? It looks awful with his mod.

Was working on a total conversion thingy a long time ago, never really got to finish it. I wanted to make some actually "innovative" weapons and gamemode concepts, and a hand drawn interface (something that doesn't look like it went through the massive filter carnage machine, also known as Photoshop).

The community doesn't seem to be worth it though, I doubt anyone will ever enjoy it, so I just stopped playing Worms 4 altogether. :(