Just played the Samnite war scenario. I liked the way you are (as Roman) limited to the 4 legion (and the memergency force under an dictator).
I was wondering though, if the replacement manpower wasnt a bit high. Line replacements are very cheap, especially as there are virtually no upkeep costs. I could easily keep the number of replacements at 20, battling each turn, and without running low on money. The speed at which those replacements were absorbed also surprised me - just resting the legions one turn would generally turn them from depleted 100 strong units back to 200+ full legions. I think I ran a casualty rate for my legions of about 200% - each year. This seems a bit high.
(I got to say it was balanced by the Samnite recruitment rate. I didn't play that side, so I have no details, but I had several multi turn battles, in which I reduced their army quite a bit, only to find them 4000-7000 stronger next month. And that with only one town left to them).
Not saying this is wrong perse, no idea of the turnover rate for the troops during this time. But I thought it odd, and would bring it here for discussion.