There is a bit of a problem with the Ottoman and Spanish UHV which are a bit stupid (no offense). I do not understand why the Ottomans have to spread Sunni Islam to Persia? Since this is not even historical, a better UHV goal for Turkey would be to not lose any cities to Christian Europeans until... date. As for the Spanish the Goal of controlling x amount of European core areas is a bit silly plus already the idea of having no British, French or Holland cities in the new world is also a bit stupid. Instead 2 good UHV's would be to have the highest amount of gold by x date and control or vassalize the Netherlands and southern Italy and the Philippines by x date. (You can exclude the Philippines its just an idea I had though)
Oh and for extra Civ's these are my suggestions:
Brazil
Mexico
Argentina (or Chile)
Austria
Germany
Russia
China (debatable)
Japan (Land of the Rising Sun) -Cool UHV would be to control South East Asia and Korea by x date
Safavid Dynasty (Iran) - Debatable, but would be intresting to have it to counter the Mughals and Ottomans
Mughal Dynasty (India) - I can help you come up with research and other materials for the Mughal's and Safavid's
Siam (can be represented by Khmer I guess)- main UHV resist outside influence and power!
Italy
Netherlands
Sweden/Norse - RFC Europe has a Swedish civ which you can use.
Last question I don't understand if your going to do this, but DON'T separate Islam into Shi'ite and Sunni, as it wouldn't make sense if you ONLY have one Shi'ite country (the Safavid's)
Oh last thing please no Canada or Australia as they are really big late in the game and neither have done much to affect outside politics or warfare except for help in the 2 world wars.
btw no offence to any Canadians or Australians I'm just saying it wouldn't make sense to have you guys as it wouldn't affect the game much except make it slower
Good work though, I really hope this comes out as successful as RFC Europe!