If multiplayer if fixed,and you need more player models quickly without having to re-export all motions and body,a texture replacer tool would help changing the player textures with new ones and save the player with a new name to choose him/her in the character selection.
Are there any plans for a texture replacer/actor rebuild,so you can change the textures and save the model as a new player?
There is the actor decompile tool,but it can only can extract textures,not replacing existing textures with new ones.
Change the player default textures with a texture replacer
I'm not sure if this is what you're looking for, but there is a program called tga2gebmp which can replace actor textures. You can also have multiple skins for an actor and then use the ActMaterial entity to change them in game. You can also change them with scripting commands.
Pain is only psychological.