Civs most needing new leaders because the ones they have been getting are Getting Old, IMHO:
Greece. Civ has never had a Greek Leader from anything but Classical Greek Athens or Sparta - or Macedon. Just from Athens they could have Solon or Cleisthenes, or an earlier Polykrates of Samos, or a later Jason of Thessaly, or - and here's a Thought: go back to the Greek Bronze Age and ring in Agamemnon or Nestor - by definition Big Personalities!
What should Greek UU be under Agamennon? A mycenain 'Axeman' seen in Humankind?
Germany. Enough of Bismarck or the Prussians. (Although Bismarck virtually started the modern German system of Social Democracy, so he could have Uniques not at all related to either Diplomacy or the military). Why not a leader from the Weimar Republic? It lasted longer than Hitler's Third Reck did, or one of the other strong Early Modern German states: Augustus of Saxony or Maximilian the "Blue King" of Bavaria
And another 'astriding leader'... Charles V (Can rules BOTH Germany and Spain. he can port Tercio to Germany as well)
Personal UU could be Schwart Reiters: (Cuirassier replacements)
Russia. Again, enough of Bolshoi Petr and Ekaterina II. How about Dmitri Donskoye, Prince of Moscow and Grand Prince of Vladimir? or Ivan III or Ivan IV of Muscovy. or Aelksandr, Napoleon's Nemesis? Almost too many choices, and by no means all militant or expansionist.
- Aleksandr I can only be valid if Napoleon I lead France.
- Pete and Katie, well too much. (I'm not sure if Pyotr Velikui a leader who clashed with Qing Kang Xi Emperor somewhere in the Heilongjiang ( Black Dragon River?), and under whom did Russia have a naval clash with Korea?)
- Who between the two Ivans are the Groznuyi (Terrible/Terrifying? Since translations were done by people outside Orthodox Christian scope so they saw what he did against Muslims and anyone else he went against 'barbaric' 'terrible')? (the Third or the Fourth)
Rome. A Late Emperor would be a nice change, but what about the Republic? Lucius Junius Brutus, the legendary founder, Tiberius or Gaius Gracchus the reformers, Gaius Marius, elected consul more than any other man in Rome's history, Marcus Tullius Cicero the legalist - lots of variety of choices and potential Uniques.
F'xis ignored Republic of Rome completely. I'd go for any famous Republic leader.
My proposals of new leader
1. India: Why F'xis keeps Mohandas Gandhi a leader of India in every game? I'm thinking of a Maratha leader who's mighty enough to lead. or Nehru.
2. Greece: Can't remeber the name of Sicilian leader but I chose him instead of Iscandar or Athens VS Spartar.
3. England: Either Tudor or 'Anjou' King. or maybe Oliver Cromwell (UU: Ironside)
4. America: John Adams
5. Siam: Generallismo Plaek Phibunsongkram. (Who's more ambitious than him? Actually it is safer to use non-monarch as a leader even the country has always remain 'Kingdom' due to a notorious 'Lese Majeste' law still in effect)... Also King Ramkhamhaeng and the entirety of Sukhothai Kingdom DOESN'T represent Siam as a 'mighty' Empire correctly (In fact Sukhothai was one of many 'kingdoms' coexisted with others that would later conquered or assimilated to Ayutthaya). Siam as actual 'Empire' began in Ayutthaya era. (though a proposals to have this civ an Early Modern ones). also i'm yet to write a thread how to design this civ.), one might even said that it began with Portuguese coming as being 'Gunpowder Empire' too!
6. Khmer: Someone who ordered a construction of Prea Vihear Prasat and kicked off the 'Rise of Khmer Empire'. I think that king in person has his name ended with 'Varman' suffix.. mmm Suriyavarman??
7. France: Charles VII, Incorrectly represented in Civ3 with his 'avatar'--Jeanne d'Arc. He contributed no less significance to French Victory in the Hundread years War, particularly solved stinging medieval problems when it comes to prolonged war--he formed Ordonnance Army as standing army so to flush out the needs of unreliable Knights and unruly mercs, Also to put smaller overlords under his definite firm control (With Big Bombards did more leverage to the King)
8. Egypt: Menes (The first Pharaoh of Unified Egypt), and Abdul Gamal Nasser (The first modern 'Egypt' leader).
9. China: Either Yong Le or Liu Bang or Deng Xiaoping
- Pre modern: Emperor Kammu
- Modern: Itou Hirobumi (A person who's behind the success of Meiji Restoration)