I would like to see it as GB, AUS and NZ & ROW TBH. I think GB fully deserve a side but I can see why you are doing what your doing. I dont like that CoS's cant pick when subs are used either.
Well I dont like that its not definite then. Its not like a ref can go in real life when a manager wants to make a sub, "Nah, dont feel like letting you make that one!"