* All Mauritanian culture counties are Valentinian, Donatist, or African Church religion
* The "Fall of Rome" Event no longer impacts Nicene fervor, and most piety and prestige losses are reduced

- Mechanics:
   - Added hegemonies to the map, including the Eastern Roman Empire, the Western Roman Empire
   - Added mechanic for "Hegemony Collapse"
      - Occurs when non-China Hegemony titles drop below a realm size of 50
      - Models the transition of the WRE after the death of Nepos as well as the collapse of the Sasanids during the Arab-Sasanid war

Landed Titles:
- Eastern Roman Empire:
  - Added two new Empire-level tiers, the Praetorian Prefecture of Illyricum and the Praetorian Prefecture of the East
  - Removed the titular Illyrian Prefecture Kingdom
  - To avoid issues with landed titles and vassal anger, the Eastern Roman Empire Empire-Tier title is kept for the duchy containing Byzantium
  - Once destroyed, only creatable by the Eastern Roman Emperor or by decision
- Western Roman Empire:
  - Replaced several Empires with Praetorian Prefectures, including Gaul (Hispania and Gaul), Italia (Italy), and Africa (North Africa)
  - Adjusted the borders of some provinces in southern Gaul
  - To avoid issues with landed titles and vassal anger, the Western Roman Empire Empire-Tier title is kept for the duchy containing Ravenna
  - Adjusted some capitals to avoid collision issues
  - Once destroyed, only creatable by the Eastern Roman Emperor or by decision
- Persian Empire:
   - Created the Parthian Empire as another Persian Empire, containing Daylam, Parthia, Sogdiana, Khwarezmia, and Bactria, essentially splitting the old Persian empire into two equal components
   - At start, the Persian Shahanshah gets all the appropriate Kingdom titles to avoid "Not Rightful Liege" errors
- Italian Kingdom Hegemony:
   - Models the post-Roman Kingdom of Odoacer and the Ostrogoths in the Italian peninsula, which maintained several aspects of Roman governance, including the Praetorian Prefectures
- Historic Hegemonies:
   - Made the Empire of Macedon and Seleucid Empire into Hegemonies, historically
- Tweaks
   - Praetorian Prefectures are, at start, destroyed when playing with Roman Dynastic Governance to avoid overly strong vassals, presuming the Praetorian is an AI player
- Removed Titles
   - Removed Titular Moesia Superior title as it is rendered superfluous on the CK3 map

Casus Bellis:
- Revamped Roman Reconquest CB to be a De Jure type of CB for the Roman Empires
- Players with Sub-Roman government can now attack other Sub-Roman (and potentially Roman) realms with a similar sort of De Jure CB
- Odoacer's Takeover War will cede land to the Visigoths and gain land from the Vandals and secure truces, so long as the Visigoths and Vandals are AI players, respectively

Culture:
- "Legal Codex" Late Antiquity Innovation no longer unlocks Roman Imperial Reconquests

Decisions:
- Added a decision to establish titular Hegemonies like for titular Empires and titular Kingdoms
- Updated the "Ask Pope for Coronation", "Ask for Western Roman Empire", and "Reunite the two Roman Empires" decisions requirements and effects
- Removed "Enforce our Imperium" decision as it is overcome by redesign
- Requirements for the "Swap Roman Province" and "Establish De Jure Title" decisions tweaked to be either legitimacy and prestige levels or having the "Legendary Leader" trait

Laws:
- Roman Dynastic Laws unlock an increasing ability for Roman and Sub-Roman states to launch wars for Former Roman Territory
- At maximum Roman State Authority, Sub-Roman realms can attack the Roman Empire, modeling some of the mid-Vth Century Wars of Suebia and Visigothica

History:
- Updated large parts of history to tie into the new map structure
   - Provence is overhauled so the Praetorian Prefecture of Gaul is under the Western Roman Empire
      - The entirety of Provence is under the PPG
   - Added placeholder characters so that the roman provinces are filled out, in places wherein we lack historical characters, to remove the overly large domain issue
   - Removed the Duchy of Massalia and the Massalian duke under the Visigoths

Tweaks:
- Skirian and Roman cultural acceptance starts at 20 in the post-Odoacer War bookmark
- The Byzantine Name rule has no effect and is noted as such
- The "Form Frankish Kingdom" Decision gives the former a claim on the entirety of the Praetorian Prefecture of Gaul instead of just modern France
- AI Western Roman Rulers will not move the capital from Ravenna
- Updated mod decisions and events extensively in light of Hegemony rank

Localization:
- Lots of minor localization fixes

Bug Fixes:
- Removed certain legend seed bugs
- Orestes is no longer eligible for election in the WRE

- As most sub-Roman titles were just copies of the Roman ones, condensed sub-Roman flavorization
- Anatolians with Roman government use Greek titles
- Assigned CoAs from the corresponding vanilla roman e-tier provinces
- Made Praetorian Prefectures use flavorization instead of a definite name, even when uncreated

- Reorganized the title tiers to account for hegemonies:
E Roman: Imperator
H Roman: Augustus
E Byzantine: Autokrator
H Byzantine: Basileus
E Persian: Padishah
H Persian: Shahanshah

- Support Roman admin in flavorization
- Limit Augustus title to Roman titles

- Added specific senators to Burgundy and Soissons
- Added CoAs for Roman magisteria based on their elite unit shields, sourced from http://lukeuedasarson.com/NotitiaPatterns.html

- Added dynamic CoA for h_persia (specific dynasty overrides), Merovingians
- Reworked doctrine icons to use flat icons, based on in-game images, added Family Rites icon
- Standardized CoA colors more, reduced usage of yellow_light
- Reworked Zurvanism icon to reduce contrast
- Added Macedonian sun and goat rampant charges
- Added CoAs for k_yemen (no Shahada), h_macedon, h_seleucid, d_raetia_curiensis, Christian Merovingians

- Updated backgrounds/poses for hegemon collapse, subroman transition events
- Added Roman unit CoAs for k_mauretania, d_sitifensis, k_altava, d_ouarsenis, d_hodna, k_septem_provincae, d_tangiers

- Anatolian cultures that used Northern clothing now use Dacian clothing
- Monks shouldn't wear Phrygian caps
- Corduenians no longer receive Scythian-specific clothing
- Romano-Pannonian uses Latin house frame
- Suavi, Romano-Hispanic use Iberian house frame (default for unspecified cultures)
- Added d_taifals CoA

- Disabled deprecated event from tributaries
- Sacred eunuchs receive beardless eunuchs at game start
- Non-DLC Roman offices become councillors
- Dacian pagan gets archaelogical complex doctrines

- Fix up Roman flavorization
- Supress errors from new changes

- Added government_is_subroman_administrative_or_dynastic gov-flag
- Deprecates old sub-roman events

- Added Sub-Roman Dynastic modifiers to match administrative laws
- Add Knight transition to Sub-Roman Administrative military laws
- Rebalanced Sub-Roman Dynastic military transition to transition from MAAs to Knights for the top liege
- Set Roman rule doctrines, even without DLC
- Added Feudal Mutation splash screen

- Add Dara knot from MFI for Adivasi faiths instead of default pagan knot
- Update Dezawist icon
- Changed CCU concept icons to match vanilla language concepts
- Added Sub-Roman law icons

- Added new icons for Roman, sub-Roman, Federate, High Tribal based on game graphics
- Assigned icons for Roman council tasks, currently unused until properly overwritten rather than cloned
- Added game concepts and search menu filters for new governments

- Added unique Greco-Roman tenet banner
- Egyptian, Semitic, Mesopotamian religions use Islamic tenet banner
- Hellenic Syncretism uses the icon for Household Gods