Pode said:Suggested Republican troop tree based on my (RTW mod based, http://www.europabarbarorum.com/) knowledge of the pre-Polybian legions and the classis:
Initial recruit: Rorarii -> three upgrade paths, light inf with tunic, scutum, hasta, helm, and some weak javs
Cavalry path: Equites Romanii (jav cav)-> Equites Consularii (hvy melee cav)
Ranged path: Leves (jav skirmishers) -> Accensi (slingers, use thrown rocks but much deadlier)
Infantry path: Hastatii (helm, greave, pila, hasta, sword) -> Principes (add pectorale) -> Triarii (full hoplite panoply)
Treat alae as mercenaries, with the top tier being the pedites and equites extraordinarii
EB is a fantastic RTW mod based on serious historical research (lots of actual professional historians in the credits), although set later than your timeframe. I'd suggest poaching off ealabor's Hegemony mods for Mount and Blade, then the PI mod I linked to first, then EB, and only then creating your own stuff if nothing is quite right for what you want. Partly because there's decent overlap on the timeframe (it was a long time after the Tarquins before Rome cared about the heel of Italy) and partly because the more you crib from previously completed work, the sooner you'll have a beta for me to play with
Ya I was thinking of a troop tree like this. I've attempted to model the Manipular Legion. I'll have Hastatii and Rorarii and Leves able to be recruited from the city, Rome. Recruitable leves will upgrade to Accensi which upgrade into recruitable Rorarii. The Rorarii will upgrade into recruitable Hestatii who will upgrade into the Principes and Triarii. Accensi Principes, and Triarii are not rectuitable.
Cavalry are a little bit difficult but their will be no formal version of cavalry upgrade. A cavalry unit will exist but this will just be named equites and these men will hold longer swords, a hasta, and round flat shield. Foreign cavalry will have missile capability. This is closest to reality I believe. I'm quite willing to change this if somebody can prove me wrong.