I posted this some time ago:
I was searching for some txt file for victory conditions and in Data\text\strat I found this:

{SMT_VICTORY_CONDITION_IMPERATOR_TITLE} Imperator:
{SMT_VICTORY_CONDITION_IMPERATOR_DESCR} Become the supreme ruler of Rome
{SMT_VICTORY_CONDITION_LAND_OWNER_TITLE} Domination:
{SMT_VICTORY_CONDITION_LAND_OWNER_DESCR} Capture %d more regions
{SMT_VICTORY_CONDITION_TYCOON_TITLE} Tycoon:
{SMT_VICTORY_CONDITION_TYCOON_DESCR} Build your empire up such that %d denarii is generated per turn
{SMT_VICTORY_CONDITION_TIME_LIMIT_TITLE} Timed:
{SMT_VICTORY_CONDITION_TIME_LIMIT_DESCR} Become the most powerful faction in %d turns
{SMT_VICTORY_CONDITION_OUTLIVE_FACTIONS_TITLE} Survivor:
{SMT_VICTORY_CONDITION_OUTLIVE_FACTIONS_DESCR} Survive longer than the following factions:
{SMT_CAMPAIGN_VICTORY_CONDITIONS} Victory Condition
{SMT_CAMPAIGN_VICTORY_CONDITIONS_COMPLETE} Completed

Moreover, in Data\text\shortcut:
{victory_conditions_tool} Edit Victory Conditions Dialog

It seems as CA had previewed an editor for victory conditions, with several possibilities: income, time limit, different number of regions taken...

I hope that all these possibilities will be open in the next patch.