As Aoe 3 touch the era between 1453 -1821
Here some solutions.
Plug new civilization and I will explain why
In America : Put Inca Empire.
Reason : Aztec Empire is in Aoe 3. Aztec last to 1521 while Inca Empire last to 1533.
It was a great empire, Area was much bigger than the Aztecs. And the Spanish really need to exterminate ALL the Noble Genealogy to destabilize this empire. They did magnificent building, very sophisticated road systems that allows everyone to get food while on bad period. They did try to colonized Mapuche kingdom and they succeed in taking actual Equator. Also their influence going as far as actual Columbia, a little part in Amazonia, and they have commercial roads with Maya city states and the famous Aztec Empire.
In Oceania : Tuʻi Tonga Empire get grasp of all the strategic isle in the Pacific Ocean
Period time of this empire : 950 -1865 It was the only great oceanic empire and thus navigate easily through ocean even before the Age of Discoveries impose respect.
Middle-Orient : Morocco Kingdom : They beat the Ottoman Empire, therefore was respect even by Europeans powers the the authorization of the Moroccan Sultanate was needed to trade in the West part of Mediterranean Sea. THey also invade part of West Africa for gold. They try colonization but failed because they just needed the gold after all. So they do colonized (Just like every empire)
Also the outcome of Battle of Three Kings was clear : they win against Portugal (who are in the game).
Persia : They did explore Indian Ocean before the Europeans. They did modernize their armies, hence stop the will of the West to take Sefevids. They even fight a lot against the Ottoman and won some victories against them. Abbas II did won the battle against the MOghol to take back Kandahar. And Moghol is the indian civilisation in AOE3.
Oman Sultanate : OMan sultanate did won against the Portuguese and Persia.
They invaded part of Persia, part of Yemen, and Colonize the east african coast. Best isle known for : Zanzibar. 18th century. They do sugar plantation just like portuguese and have their specific laws for the colonized lands.
Africa now : - Ethiopia Was never colonized until the Italian try in the 19th century and owned them in the Adwa Battle in 1896. Ethiopia was one of the most nation-state of Africa. They modernized them quickly with guns, cannons, etc…
Portuguese help them against Adal Sultanate and Funj Sultanate. Ethiopia were highly considered till this day by the West. Sophisticated culture, philosophers, and also for business : Coffee came from Ethiopia.
Songhai Empire : The Songhai Empire (also transliterated as Songhay) was a state that dominated the western Sahel in the 15th and 16th century. At its peak, it was one of the largest states in African history. The Songhai Empire (also transliterated as Songhay) was a state that dominated the western Sahel in the 15th and 16th century. At its peak, it was one of the largest states in African history. At the bottom were war captives and slaves obligated to labor, especially in farming. James Olson describes the labor system as resembling modern day unions, with the Empire possessing craft guilds that consisted of various mechanics and artisans.
Europe : Habsburg Monarchy 1282–1918
The Habsburg monarchy did maintain constant fight against the Ottoman, Prussia, French, Try to invade Italia and succeed in some ways. They did have overseas territories (Nicobar Islands (1778-1785), Drang nach Osten (East europe colonization) and adapt their political structures specifically for their new colonies.
The end of the The Thirty Years Wars also ended with intern colonization in the Holy Roman Empire. So… Put that !! Simple as that. !!
Asia : Split India in 2 part : Moghol Empire (that already exist in the game), and Vijayanagar who last until 1652 and was split unto multiple kingdoms. But the deep south of India was never invaded by the Moghol and So Vijayanagar represent the last Hindu Kingdom in Indian history before Moghol and British Colonial Empire.
One of main reasons of the fall of Vijayanagar Empire was : The Sultanates to the north of Vijayanagara united and attacked Aliya Rama Raya’s army, in January 1565, in a war known as the Battle of Talikota.[50] The Vijayanagara side was winning the war, state Hermann Kulke and Dietmar Rothermund, but suddenly two Muslim generals of the Vijayanagara army switched sides and turned their loyalty to the Sultanates. The generals captured Aliya Rama Raya and beheaded him on the spot, with Sultan Hussain on the Sultanates side joining them for the execution and stuffing of severed head with straw for display. The beheading of Aliya Rama Raya created confusion and havoc in the still loyal portions of the Vijayanagara army, which were then completely routed. The Sultanates’ army plundered Hampi and reduced it to the ruinous state in which it remains; it was never re-occupied.
New maps in : Europe, Africa, Oceania, Middle-Orient
New outpost for new combat units, techs, etc… adapt to the news maps.
Add new type of civilizations :
Middle Orient : Morocco, Oman, Persia
Oceania : Tui Tonga Empire
Africa : Ethiopia, Songhai Empire
Already exists :
European civilization : Habsburg Monarchy
Amerindian civilization : Inca Empire
Asian dynasties : Vijayanagar Monarchy.
Gameplay and the game itself :
Fix the problem of monopoly victory bug buttons
Fix the bug that doesn’t erase the button of evolving troops for outpost troops when you got the Imperial Age tech for getting them to Imperial troops.
Multiple teams on multiplayer juste like Age of Empires 2 or Age of Mythology
More players (maybe 10 to 12 players for a game).
Real historical campaign (and you have plenty of that)
More tactical strategies (hide units in forest), more environnmental advantages., etcc…
So if you can do that… WELL, THAT WOULD BE THE PERFECT AGE OF EMPIRES 3 and I’’LL BUY Your game. If you need help, I’m interested to participate in the project of the Aoe3 definitive edition !!
Thanks you, happy new years and have a good day !!