I don't have any Alexander the Great era models...Marius/Sulla/Pompey/Caesar is as early as I go at the mo.
I'd love to see those Chalons lists as Patrician Romans is a big favourite of mine and is one I'd like to put in the mix as a European contemporary of the Arthurians. So yes please, do wing them over on the email, please!
Interestingly, having been reading quite a lot of Procopius plus some other works/articles about the mid 6th century and the Gothic wars in particular, I'm increasingly coming around to questioning the way many wargame rules' army lists portray the Ostrogoths - the idea of massed light infantry archers seems increasingly implausible reading the (admittedly Roman-biased) accounts of Belisarius' battles against them and their inability to reply effectively to Roman archery other than by simply attacking the archers hand-to-hand and forcing them back... Close order infantry spearmen supported by spear armed cavalry seems far more the order of then day (and without the restriction
forcing them to have loads of cavalry either, as there's an awful lot of mention of foot warriors, especially in the battles outside Rome...)