Mercenary availability could use some restraining as they are far too many especially in N Macedonia and around the Hellespont you can recruit quite a few stacks in those provinces with enough money.
The mercenary phalangites are also way too common in my opinion.
And those predominantly or only led by a general armies composed of gauls that the Romans use because the AI is unable to keep bringing troops from the homeland are very annoying.
Could you lower the refresh rate of mercenaries, what is the team's POV on this?
Are you satisfied with the way things are, from a historical POV or/and a gameplay POV?