I still think the best way to get this set made is as a multipart convertible set of Royal Horse Artillery with a gun crew plus riders and skirmishers. If correctly designed the set could cover the RHA, colonial hussars, and Durban Mounted Rifles, and other colonial volunteers.
I am in favor of all the colonial sets that HaT sees fit to make. However, I'm not sure how many more Zulu war volunteer cavalry sets I need. I wish they had included more figures wearing braided jackets in the FLH set, to make ready conversions into other volunteer units.
I think one set of RHA that could easily be converted into hussars and Natal volunteers would sell better than three distinct sets covering each subject.