Gracchan Reforms

[Timoleon]

IIRC, the property requirements to serve to the legions where dropping during the whole second century BC. This was partly due to the demanding wars in Spain that where very unprofitable for the legionaries. Many Romans eligible for service tried to avoid conscription by declaring less property that their actual.

The Roma Surrectum team have included the "Very Early Legionaries" in their mod. They replace hastati and principes so that heavy roman infantry is consisted of them and triarii only. These VE legionaries are used in the period between the Second Punic Wars and the Marian Reforms.

Is this what you have in mind?