First: the Dragoons are beautiful! Well done.
Second: Suggestions
Alamo: New Orleans Grays, Alabama Red Rovers, Crockett (or other principal) Mexican Lancer (mounted), Mexican infantrymen (2)
Old West: the previously discussed Pecos Pleasure Palace (and remember, a strategically placed palm frond can be your friend).
Sci-Fi: Male/Female light, medium, and heavy armored space troopers with weapons to match.
Aztecs: Priest, Assistants (2), Temple Maidens (2), sacrificial victim.
Aztecs: Warriors.
Steampunk: From a scantily-clad babe (bloomers, tophat, and goggles mandatory) to an iron-armored, steam-powered heavy infantryman (red-coat paint, of course).
Dwarves: Warriors getting rowdy in a tavern (Thank God It's Friday...).
Las Vegas Showgirls. (Think thongs, beads, head-dresses, and feathers; lots and lots of feathers ...and not all of them covering something).
I could go on...
Glen