This is looking like a great mod! A good reason to start playing ETW again. The models are brilliant, they do a lot to capture the uniforms of the day! I also noticed that Great Britain has a few colonial troops (Oz, Nigeria and India for example) you forgot to add the South African troops. At the time SA was part of the Empire, as the Union of South Africa. The Boers had just been defeated and the Boer Republics incorporated into the Union of SA. The Brits learned some hard lessons fighting a very determined and unconventional enemy. In fact, if Britian didn't have its colonies to call on they most probably would have lost the 2nd Anglo-Boer War. The South African troops also proved their worth in the battle of Deville Woods. We lost an entire battalion there but they won that battle.
So I think it would be a good idea to include South African troops in the Great Britain roster.
Sorry for asking so late in the day.