@ Gaias - I see from one of your other threads that you now have permission from the RTR team to convert more stuff. We can all feel very happy about that. If you need me to get in touch with the Extended Greek mod guys to get the same permission then let me know.
OK, long list of temple ideas, criticism / comments more than welcome.
Greeks
Zeus-Amon, Requires Marble and gold, benefits: 2 Happy faces
Hera, Requires Marble, benefits: Less corruption
Ares, Requires Stone and Copper, benefits: Less WW, prop shield, stealth attack shield?
Athena, Pre placed GW (Athens), benefits: 50% Research and auto produce Infantry
Demeter, Requires Greeks in radius, benefits: Acts as cheaper granary/auto produce slave?
Artemis, Pre placed GW (Ephesus), benefits: Double population increase (like Longevity) but goes obsolete quite early
Hermes, No requirement, benefits: 50% Commerce
Poseidon / Neptune, Requires Marble and a pharos, coastal installation, benefits: Extra commerce from water tiles
Apollo, Requires Marble, benefits: Happy face or 50% research?
Dionysus / Bacchus, Requires Wine in Radius, benefits: 2 Happy faces, but produces waste
Aphrodite, Requires Greeks in radius, benefits: 2 Happy faces
Hephaestus, Requires Copper in radius, benefits: 25% Production
Hades, Requires Iron in radius, benefits: 25% Production or 50% commerce or less WW? But produces waste.
Heracles, Requires Greeks in radius, benefits: Defence bonus?
Delphi Oracle, Pre placed GW (Delphi), benefits: Shrine in every city (1 Happy face) and 50% commerce
Dodona Oracle, Pre placed GW (Dodona), benefits: Double effect of shrine?
Cretan Oracle, Pre placed GW (Knossos), benefits: Increaces movement of naval units
Note - The Romans will be able to build the Temple of Apollo, Dionysus/Bacchus and Poseiden/Neptune, and the Egyptians will be able to build the Temple of Zeus - Amon.
Egyptians
Osiris, Requires Egyptians and river in radius, benefits: 2 happy faces or auto produce slave?
Isis, Requires Egyptians, benefits: Happy face and less corruption
Horus, Requires Egyptians in radius, benefits: 50% Research
Set, Requires Egyptians and Camels in radius, benefits: Less WW
Anubis, Requires Egyptians, benefits: 50% Commerce
Ptah, Requires Egyptians in radius, benefits: 25% Production
Bast, Requires Egyptians in radius, benefits: Happy face and propaganda shield
Siwa Oracle, Pre placed GW (Siwa), benefits: Temple of Zeus-Amon in every city
Romans
Jupiter, Pre placed GW (Roma), benefits: 4/2 Happy faces in Rome/whole Republic
Juno, Requires Italians in radius, benefits: Less corruption, propaganda shield
Minerva, Requires Italians and iron in radius, benefits: 25% Production and 50% research
Mars, Requires Italians in radius, benefits: Less WW, stealth attack shield
Saturn, Requires Italians in radius, benefits: 50% Commerce
Venus, Requires Italians, benefits: 2 Happy faces
Vulcan, Requires Italians and Iron in radius, benefits: 25% Production
Pluto, Requires Italians and Iron in radius, benefits: 50% Commerce or production, but produces waste
Persians
Ahura Mazda, Requires Persians in radius, benefits: 2 Happy faces, less corruption
Fire Temple, Requires Persians in radius, benefits: 1 Happy face, 50% commerce
Mithra, Requires Persians, benefits: 50% Research
Zoroaster, Small Wonder-Persian flavour, benefits: 2 Happy faces Empire-wide
Epic of Gilgamesh, Pre placed GW, benefits: Less WW Empire-wide
Indians
The Maharabhata (Epic), Pre placed GW, Double effect of Derasars
The Ramayana (Epic), Pre placed GW, Double effect of Mandirs
Derasar (Jain Temple), requires Indians in radius, 2 happy faces
Mandir (Hindu Temple), requires Indians in radius, 2 Happy faces
Tirtha (Jain pilgrimage site), requires Indians and Indian Elephants in radius, 50% Commerce
Stupa (Buddhist Temple), requires Indians, very expensive to build to represent the recent introduction of Buddism into India, 3 Happy faces
I could do with some info on Indian religion at the time

D Blue, if you're out there?), AFAIK it was pretty much Hindu, though Buddhism was on the rise. What would be the most important temples of the area to represent in a scenario like this. Also, if anyone knows much about Persian (especially Zoroastrian) religion then please

because I haven't got much of a clue.
One other thing - I was planning to have really powerful defensive troops in the various areas that Alex had to conquer that would upgrade to powerful attacking units when a certain tech timer arrived. However, I am not sure that the AI is going to upgrade the units when it should so I'm thinking about making an improvement that gives a defence bonus of about 900%, only when this goes obsolete Alex will be able to move his campaign forward. Does this sound like an improvement or am I overlooking something really obvious?