One aspect of realism that's missing...

[Kολοσσός]

There should be crazy horses running around the battlefield minus their riders who had been killed or otherwise knocked off the saddle. Also, some riders should be able to get up after falling off and resume fighting on foot...or flee on foot.

I wonder if the game engine is flexible enough to allow for programming that. I can imagine it would be a programming challenge because within the game's object programming scheme a rider and his horse are considered a single object, not separate creatures who may act independently of one another as in real life.