I am making a stealth mod for multiplayer RC. Here is the download link for my test version:http://http://www.savefile.com/files/1324097
Make a backup of your properties folder before you put this in. It goes in the GameData folder in your Republic Commando directory.
This is only a weapons mod so far. I still need to replace skins and test it online. PM me or post here if you want to test this with me. I have a 4 day weekend, so you can make the schedule. I'll take screenshots when I am able to test with someone.
I will update as I add to the mod.
EDIT: Also, as long as my PC is on, I am logged into xfire. So you can message me there too. My xfire is in my sig.