-Legions and legion legacy/history
-Army naming and banner customisation
-Cinematic camera without HUD
-Line of sight
-Stances: forced march, muster, raiding, fortified (though RTW had forts separate from armies, that could be garrisoned by different armies)
-Transports (debatable benefit)
-Wonders not included in original 7 e.g. Stonehenge
-Political parties
-Territorially unified Rome
-Ability to select upgrades, specialise armies
-117 factions plus rebel and slave emergent factions
-More playable factions: every playable Rome 1 faction (3 Romans, 1 Carthage becomes 3, Gallic tribe, German tribe, Brittanic tribe, Seleucids, Egypt, Greek cities, though DLC, are 3 playable factions (Athens, Sparta, Epirus) and 3 non-playable ones (Syracuse, Rhodes, Pergamon) instead of 1, Parthia) plus Macedon, Pontus and 3 steppe tribes in dlc (and future ‘Northern Tribes’ pack discussed on the grapevine)
-Playable barbarian factions are real tribes: Iceni, Suebi, Arverni instead of Britannia, Germania and Gaul
-Families and civil wars for all factions
-Carthage a republic
-More units (around 3x as many)
-200 naval units
-Integrated diplomatic AI and campaign AI
-More factors affect diplomacy e.g. you were nice to my ally/you had a war with my trade partner
-Ability to give general orders to AI-controlled allies e.g. ‘defend here’
-Edicts
-Province/region system to aid management
-New formations, such as shieldwall (but this was in BI) and defensive testudo
-More city variants and 5 unique cities based on their historical counterparts
-Option of Republic or Empire after civil war, not just Empire
-Cultural and Economic victories, and victory conditions include allies, client states and satrapies
-Full-screen strategic overview map
-Multiple capture points in cities
-CoH-style victory countdown for capturing cities and victory points
-Limited armies intended to give bigger, more decisive battles (and I have found I am fighting larger battles, though some have not)
-Navigable rivers
-Sea regions, that can be neutral, hostile, contested, shared or controlled, each with different bonuses and penalties
-Seleucid, Ptolemaic, and Carthaginian Empires broken up into satrapies/client states
-More weather and lighting effects
-Historical storyline to follow with money rewards
-Map effects e.g. clouds
-Replenishment for fleets at sea in friendly regions
-Barbarian confederations
-Height variations within units
-Caltrops, spike pits, burning bales (fireballs)
-Bigger map
-More cultures(e.g. Illyrians, African Tribes, Sarmatians, Arabs) with their own units and building varieties
-New battle modes: coastal battles, port sieges, more developed ambushes
-Diplomatic options: non-aggression pact, defensive alliance, war target, satrapies or client states instead of protectorates
-Imperium, resulting in agent, edict and army cap boosts