Yes, that would be interesting and, so far as I'm aware, never manufactured before.
My guess, however, is that if Empress decide to expand the range (which, of course, I hope they will), they'll start by adding some more figures which match the existing ones and see how the range sells before branching out into figures for different countries. Personally, I'd love to see some historically accurate, Paul Hicks - sculpted, Swedes, but I'm not holding my breath.