It would be a very good idea for us as costumers and for you as company, everybody will buy more than one box. I like the Malcom's idea about Lanceros of Alfonso XII of the spanish carlist wars but we'll need infantry (isabelist infantry could be used in the african campaigns).
I would also like to see a set with interchangle (swoppet-style) heads.
If you do, please ask the sculptor to make them with a neck/peg. If you go back to the Contributions section, and look at the U.S. Cavalry/Apache Scouts, and scroll down towards bottom, you can see how I converted all 12 into Apaches. The customer could then use a pinvise drill to plug in the head without glue if desired.