Epirus starts with thureos reforms and has a much better starting infanfry selection than Rome.
Ironically polybian era roman army is one on the main influences on thureos reform.
The problem is that most barbarian factions have either equal or even better starting infanfry selection than Rome,
Ilirya for example.
Camilan units, except cavarly, are likely obsolete by the time of the phyric war
Rome should start with some camilan era units, but should also have acess to polybian era infanfry immediatly like Epirus.
I Apologize for if I'm being rude!