Hi,
I wanna help out with the 1.17 version. I'm sociologist and play your game every day since a couple of years. I have some tips:
1. Please add aboriginals to Australia.
2. Trading luxuries for gold per turn is very expensive since last expansion. Like 65 gold per turn for gold, cotton, dyes, etc
3. After xix century each turn is very slow, I think because of the voting in the Aphostolic palace and World Congress, to take cities and because some civs, specially China, tend to revolt to become autonomous, many times and revive and revolt again.
4. I think the new Turkish civ from Afghanistan, is unseen from Europe and also takes time to load when it appears. I would delete it.
5. Ethiopia disappeares too fast.
6. Please add new starting dates, such as the 1700dc one we have, but for 1800 and 1900.
7. Argentina is too small and with less resources it has. We have more wheat, sugar, iron, aluminum, oil and uranium. Too many swamps, we have plenty of fertile soil.
8. I conquered all Europe with Germany and had a civil revolt, so loosing the game, instead of having stability because of nationalism and expansion.
9. Spain should have a special building to have less maintenance for colonies. Something related with religion and Catholic missions. In the 1700 map economy doesn't allow research. 10% only.
10. Italy's ships cannot leave the Mediterranean. They should have ships that can move non open borders seas.
11. Russia is too strong. Their research should be slower during the 1700s and 1800s.
12. Japan should have more productivity, more iron and cold or a special forge.
13. The Aphostolic palace and World Congress voting should be more spacious in time during the 1800s and 1900s.
14. Please add more music for the european middle ages, more medieval and Celtic fiddles.
15. The Latin american civs music is too loud. For Argentina please add instrumental Tango.
16. The Prussian Trading Company should allow to add colonies in the oriental Guinea and southern Africa. The same for Italy in Ethiopia and Tunis.
17. Poland tends to dissapear too fast (1700dc map), maybe adding a special defence unit and building would help their stability. Something related to their Catholic belief.
18. Regarding slow turns. I think the AI takes so long to process turns because the stability is too weak overall. Sweden revolts and comes back several times, the same for China and maybe other countries in the middle east.
I hope that can help to make the game faster between turns.
Greetings from Buenos Aires