Marius Event

[Makanyane]

To summarise that thread in answers as it was a bit research in progress. Marius reforms seem to be triggered when city with 'italy' hidden resource becomes huge city.
(never did find out if it had to be in roman ownership)

If you want reforms later you could remove 'italy' resource from most of the regions in descr_regions.txt, except say, Syracuse, and then reduce that regions base farming level (in regions) and its starting level (in strat) and it should then take longer to get to huge city level, to trigger reforms... (oh, and take the grain resource off it or anything adjacent as that gives faster growth)

Otherwise purely for unit recruitment change the
and marian_reforms
and not marian reforms
requirements for the relevant units in EDB and build them from a different building, perhaps anew building which takes a long while to build after imperial_palace or a building that is introduced by scripting (which btw, I don't know how to do) instead.