I'd be very interested in putting a mod together based on the Napoleonic era. And the RTW engine just screams for a mod such as this.
I don't know a lot of the history of it, but I think there could be a lot of potential for this. It would pit many strong countries against each other, such as Britain, France, Spain, Prussia, and Russia. The only thing it would be missing is sea battles (but hopefully CA will add those in a patch or expansion.).