Me and Al had a go at translating the excellent Bloody Big Battle rules to the AWI.
Big shift in figure ratio (BBB can handle 2000 men a base and is designed for the really big battles of the 19thC) but at 60-80 men a base, a few tweaks and a couple of additions the rules remained basically unscathed and the game went well.
It was the second time I'd tried this and we learnt more about how to further tweak.
http://twomarshals.blogspot.co.uk/2017/04/awi-bloody-big-battles-test-game.html