I read through the articles Bryan found and they had some good points in them but what if we were to try out via gaming some simple as possible rules adaptations and then write them up as an article for publishing by ourselves ?
We would need to cover the things that were unique to ancient warfare- Command is different to mediaeval warfare. Pike and LTS phalanx, Roman maniples and pilum, warband, elephants and chariots/scythed chariots.
We'll have forces for most of these (except the Romans) which I have but unpainted.