Well, you could also search for other things! Putting different uniforms / colours / sounds / troops / maps in is not that hard! I can help you with the maps & colours.
For instance, I think Attilla the Nun made a Tirailleur uniform.. And if I'm not mistaken, this uniform was used by the Young Guard ( otherwise Duuring will jump in if im wrong, no worries <3 ).. You can easily replace a French unit which wasn't at waterloo with this uniform, and the coding is not hard at all to change a name.
Edit: like I said before, I can definitly help out with some stuff, and I can code easy stuff, but it would take work out of your hands. I can also map, and texture ( really few though )