One of the largest pantheons with detailed information and mythology about the members is the Greek pantheon, but not all of the minor personified concepts would truly be gods in AD&D; some of the minor ones would just be near-powers and not have cults of their own, but I would need to do some research to determine who should have a cult in the game and who wouldn’t. In addition, Roman mythology imported a wide variety of Greek myth and concepts into their own (mostly unrelated at the beginning) religion; some of the deities with significant differences (like Mars) deserve their own entries while others would just be aliases. In addition, the Etruscans had a great deal of Hellenization as well, and they might be worth being included too. Further, the Titans would warrant their own pantheon of sorts, and many would function as the enemies of the Olympians. While in reality, most Titans likely never had cults or received actual worship, they could and should in the D&D game. In addition, the Greek Mystery Cults were a major element of their religion in the late pre-Christian eras, and I would need to try and capture that as well.
One significant thing missing from the AD&D material on the Olympians is the Gigantomachy, the war against the gigantes/giants. This should be an ancient, pre-historic thing and I should have integrated it into the Giant Pantheon writeups (I plan to rectify this), and none of the named members should be gods (at least one source indicates all but one of the Giants were slain), and the elven war against the giants should be connected to this too. I would have most of the Greek-facing part of the war focused against offspring of Annam and Gaia, as well as near-divine offspring of Grolantor and Karontor.
Posted by AuldDragon