Personally I think this is how inquisition should work:
I will be happy to address each idea.
1. Inquisition unit costs the same as a missionary.
Respectfully Disagree: The inquisitor is a very powerful unit. While the Missionary can spread one single religion, the state religion, into a city; the inquisitor can remove
ALL non-state religions and their associated religious buildings. With greater capability, there must be a greater cost.
2. Requires use of theocracy to build or use. No actual tech requirement - can get to via theology or Paya wonder.
Respectfully Disagree: Not sure what the Paya wonder is... Organized religion has a central authority, which determines theology. History shows that governments with official state religions had a central authority, the church, which determined religious theology. In a Monarchy, the leader ruled over the affairs of the state, while the official church ruled over religious matters. The Church and State have close ties. Theocracy is a form of government, where Holy men or women are in charge of the state. The Church and State rule together. Point is a Theocracy and Organized religion can have inquisitions.
3. Use will reduce population by 1 or 2, depending upon number of religions present and how long they have been present, if the population isn't already 1 (if pop =1, stores are reset to zero) but yield some moderate amount of gold (confiscated property).
Respectfully Disagree: Reducing population by 1 or 2 represents far too many people. The Holy office building, with it's -1 health is still a big population hit, but far more realistic and the Holy Office yields a small amount of gold.
I don't agree with this having anything to do with a victory, except in the sense that it can prevent somebody from getting an AP victory without destroying you, and it can enable you to defy AP resolutions without the +5 anger. While running theocracy, they can't reestablish the religion in your civ to push you around or achieve AP victory.
Respectfully Disagree: The Apostolic Palace (AP) is a Wonder
not an organization where the diplomats decide if an inquisition can take place or if a victory can be achieved. See post 271 on the following link:
http://forums.civfanatics.com/showthread.php?t=249392&page=14
Now if you don't like the Religious Victory, I might be persuaded to make it an option. That way you can play the game the way you like it.
In absence of having the AP to contend with, the idea would be mostly to deprive competitors of shrine money while gaining some of your own at the cost of food (-1 pop) and hammers to build the inquisitor. For balance maybe there should be some kind of bonus for running theocracy in cities that contain your religion and no other.
Agree: There is a bonus for running Theocracy: New units get +2 free experience points when constructed in cities with the official state religion. Plus, Theocracy prevents the spread of non-state religions. The Holy Office building provides fair compensation for building inquisitors by giving +2 gold on every turn. You can't build a Holy Office under Pacifism or Free Religion civics. Last, but not least, a player is rewarded for religious unity by achieving a religious victory.
Very Respectfully,
Orion Veteran