So I've recently become kind of obsessed with Ottoman history, and, having a lot of free time lately, written an ENORMOUSLY LONG (sorry about that) list of recommendations for the Turkish civ. Feel free to ignore as much of it as you want, but hopefully some of it is useful:
Scope
I think Turkey representing all Oğuz Turks is excessively broad , since it:
- Combines East and West Oğuz groups,
- Ignores both ethnic and cultural continuity with the native Anatolians, and
- Exaggerates the continuity between the Oğuz and (Anatolian) Turkish people.
A lot of claims to continuity from the Oğuz, and the Seljuks in particular, date back to the Ottoman sultan Murad II as part of a propaganda campaign against the Timurid Empire (and more generally to early Ottomans trying to establish their legitimacy), and more recently to Atatürk trying to promote a non-Ottoman Turkish identity. In reality, theres a pretty clear break ethnically, culturally, religiously, and linguistically between the nomadic Tengriist Oğuz Turks of Central Asia and the Muslim Anatolian descendants of the Seljuks of Rum.
Its tough to figure out exactly what the scope of Turkey should be, not just in the game but in real life. You cant define it by ethnicity Turks are a smorgasbord of Greek, Arabian, Kurdish, Armenian, Tatar, and much more besides. You could try to define it by religion (the Ottomans sure did), but that owes more to 19th-century revisionism than to anything else. Culturally, Turkey owes at least as much to the Byzantines, Iranians, and Arabians as it does to any Turkic peoples.
All in all, the least wonky definition I can think of is part linguistic and part geographical: all speakers of West Oğuz languages east of the Caspian Sea (at various points in history including various parts of modern-day Turkey, Azerbaijan, northern Iraq and Syria, Thrace, and very arguably Crimea). Possibly parts of western Turkmenistan as well. Politically, theyd be represented primarily by the Sultanate of Rum, the Ottoman Empire, and the Republic of Turkey.
Cities
The Turkish city list needs some work. This goes back to the whole scope thing, of course, and its tricky to figure out a sensible order for a civ most of whose major cities were acquired through conquest. Im working on a city list based on the cities that were captured, or blossomed into significance, in each of the states I mentioned above. Heres the current draft (intentionally biased towards cities actually founded by Turks; Im trying to make it less biased towards cities geographically in modern-day Turkey than the extant list, but not entirely successfully):
Medieval/Seljuks of Rum:
- Konya
- Antakya
- İznik
- Kayseri (Mazaka, Caesarea)
- Antalya
- Diyarbakır
- Balıkesir (Karasi)
- Denizli
Late Medieval/Early Ottoman:
- Bursa
- İzmit (Nicomedia)
- Edirne (Adrianople)
- Ankara
- İzmir
- Isparta (Baris)
- Selanik (Thessaloniki, Thessalonika)
- Manisa
- Amasya (Amaseia)
Renaissance/Ottoman golden age:
- İstanbul (Constantinople, Byzantium, and countless others)
- Trabzon (Trebizond, Trapezus)
- Erzurum
- Gaziantep
- Aleppo
- Tarsus (Tarsos, Tarsa)
- Van
- Maraş (Kahramanmaraş

Industrial/Late Ottoman:
- İskenderun (Alexandretta)
- Adana
- Eskişehir
- Samsun (Amisus)
- Mersin (Zephyrion, Hadrianopolis)
- Ordu
- Malatya
- Adapazarı
Global/Republic of Turkey:
Would something like that work?
Visuals
The light green color the Turks have now doesnt seem to have much to do with the civ I assume it came from swapping Firaxis Turkish and Arabian colors? The best color for Turkey would probably be a fairly vivid red (like rgb #e30a17, used on the modern flag), though that would mean introducing yet another reddish-colored civilization to a region already overflowing with them. A deep blue (around #203cb0) could also work as a reference to İznik pottery and the Blue Mosque, which besides being exceptionally beautiful have an east-meets-west vibe that seems pretty fitting. Both those colors are often used in traditional Turkish carpets, which is a bonus. Sky blue would be a better fit for a Central Asian/Tengriist civ, but could work as representative of the Seljuks.
The bow and arrow emblem on the flag makes more sense for an East Oğuz civ, which as I said earlier should IMO be separate from Turkey. It really doesnt fit the Turkish civ at all. I know its often used as a symbol of the Seljuks, but thats historically inaccurate and mostly based on
this one Seljuk flag made up by a 1970s Turkish TV show or something. The bow-and-arrow motif was incorporated into the personal standard of Tuğrul, the founder of the Seljuk Empire, but thats about as far as it goes.
The best choices, IMO, would be the star and crescent (natch), a crescent sans star, or the tulip.
Turkish architecture has
way more in common with Byzantine architecture than it does with Arabian architecture. Whatever their citystyle, it ought to be the same one as the Byzantines. IMO there really ought to be a separate Byzantine/Turkish/eastern Mediterranean citystyle, since Byzantine architecture is also very distinctive and has little in common with classical Greco-Roman architecture, but in the absence of that I guess Id very reluctantly recommend switching Turkey to the Greco-Roman citystyle.
Tangentially related: I think a good solution to the whole Greek/Roman/Byzantine scope issue would be to have Greece just represent ancient/pre-Christian Greece, and have Byzantium represent the modern Hellenic Republic and other Balkan states. Fun fact: during the initial Greek nationalist movement in the 18th century, many people were surprised to learn they were Greek, having thought of themselves for centuries as Romans (i.e. Byzantines)!
Leaders
The Imperialist trait doesnt really suit Süleyman. My understanding is that it represents leaders who oversaw the establishment of an empire, or otherwise helped their people take on an unprecedented level of importance in world politics. That definitely doesnt describe Süleyman, who was crowned Sultan of an already vast empire that was central on the world stage. None of its effects really seem fitting either getting research from conquered Belgrade or Baghdad? Extremely efficient slave labor? Both of those seem geared towards the history of the Roman Empire, which is all well and good, but they dont have much to do with Süleyman or the Ottoman golden age.
Of course its unclear what could replace it. Judicial is absolutely essential, and all the Judicial slots are filled. Charismatic fits him shockingly well, but Le Loi already has Cha/Jud, and I dont know enough about him to know if there are any viable alternatives quickly reading through his Wikipedia page, the best I could come up with is Cha/Org, which is currently Atatürks combo! Coincidence, or something deeper
Progressive or Philosophical could also work, given his investments into education and the arts. Humane too, since a lot of his legal reforms protected religious minorities, the poor, and criminal convicts. These three all downplay his military prominence, which IMO is a good thing, since all the Turkish leaders as they stand now are at least partially military-themed. That bugs me particularly because the cultural/political history of Turkey is often lost to the Ottomans-as-'Eastern Peril' and Seljuks-as-opponents-to-Crusaders narratives. I could go on a long quasi-political rant here but I think everyone's better off without that.
Minor point: Atatürks diplo text refers to him giving a 5-day speech; the Nutuk actually lasted for 6 days.
Civilopedia
The Firaxis civilopedia entry, aside from only covering the Ottoman Empire, is just plain awful. Almost every single detail in it is wrong. I can try to write a replacement if you want, but in the meantime Id recommend just leaving it blank over keeping it as it currently stands.