I added this text to my 2nd post.
Some concepts in my mod:
1. All civs get a specific wonder.
2. Major Religions :
Orthodox Christianity
Catholic Christianity
Protestant Christianity
Islam
Buddhism
When you research the tech named after these religions you are allowed to make that religion the
state religion in your empire. By doing this you are allowed to build some wonders that require the state's aproval and power to build. There are also some wonders that do not require that religion to be the official one, it is enough to research the tech to make your ppl follow that religion.
But check out the civilopedia description of each because for example, making Protestantism a "state religion" makes 1 citizen happy in every city (the other state religions don't do that).
3. Minor Religions :
Over here there are the
resource-religions.
Judaism - jewish communities appear on the map if you research the Judaism tech, which will allow you to build some wonders.
Zen Buddhism - just like the above it allows the building of some cool wonders, but this time you don't have a separate tech for it.
Note1: This is just a small part of what the relgion part would have been in my "big mod", and what it will be in my "religion mod".
Note2: I hope you don't expect a preety algorithm for religions like Rhye has in his mod.

So read the civilopedia entries. I like my mod to seem a little chaotic & stochastic.
4.Christian Monasteries & Mosques - If you have a ch. mon. or a mosque it's no big deal (in this mod), but if you have 2!!! (and by all means you should struggle to get another 1) you can start the crusades/jihad.
And if you start the
Crusades you can build the a)Templar Knights; b)Hospitaller Knights
If you start the Islamic
Jihad you can build a) Mamelukes; b) Kharijite sect
All these are unit-producing wonders.
5.Freelancer's Guild - if you have this resource then you can build skirmishers(yey), if you have it in the city radius you can build "Peltasts"(yey again). This is not the important part. The better part is that when you get a luxury - that luxury + freelancer's guild allows you to build a unit generating wonder. I made one for each luxury (i think i left out incense

).
This seems a little complicated but it's a handy thing indeed. When you build an embassy you see what resources the other civ has and you can think about what freelancing units he might get.
In the game i am playing i have freelancers and beer. That means i have Landsknechts which are really powerfull but come every 9 turns

.
6.Resource in radius buildings
If you have ANY (strategic or luxury) resource in the city radius you are able to build an improv, or a wonder... it depends. This is usefull to know when placing a city.
I may add more concepts later.
I hope this clears up some question (or confuse you even more then you already were

).