Generally, the problem with this mod is that there are few continuing civs that can respawn. If egypt respawns in normal RFC, it's still Egypt, if the Hittites respawn in 200 AD, they are... ? Again, some civ just aren't supposed to last...
But Rhye, you haven't answered one of my basic questions: How do you plan to handle Byzantium? And how do you plan to model the roman and Alexandrian conquests and - in the latter case - their offspring empires?
(Macedonia and Egypt can be modelled by dynamic civ naming, but what about seleukia and the other asia-minor civs? a solution could be to let the Hittites be two civs, their respawn being another country)
The spawn date list (copied partially from umarth)
I think we can go with this list:
Egypt - 3000 BC
Babylonia - 3000 BC (earlier because you need two starting civs... ;-) I would otherwise suggest to move the start date up to around 2000 BC ....)
Phoenicia - 1500 BC (says German wikipedia, 800 BC conquered by Assyrians and later New Babylonians)
Hittites - 1700BC
Israel - 1300 BC (or: shortly after the Phoenicians, so that the two near placed civs can coexist without the spawning of the latter killing the first...)
Celts - 700 BC (they were a civ! so early as they need time for the big land they occupy and the tricky environment, non-choppable forests...)
Athens - 900 BC
Sparta - 800 BC
Persia - 550 BC
Macedonia - 400 BC (depending on how much time gameplay needs; they conquered the world in around 20 years (350-330) and then were the small country again... how to represent?)
Carthage - 600 BC (founded 8th or 9th century, but in 6th century, became independent when Tyros got conquered by the Persians)
Rome - 500 BC (out of the blue, i think it's dependent on gameplay)
Huns - 370 AD (the historical date, you could make them earlier to simulate other barbs...)
Byzantium - 325 AD (movement of capital to constantinople, depending on the hun spawn
Etruria (not playable, minor nation) - 800 BC
Germanic Tribes (not playable, minor nation) - 200 BC or rather all the time as barbs...
Independent (not playable, minor nation)
Independent2 (not playable, minor nation)
Anybody wants to suggest accurate starting dates?
1) We have many civs spawning in the same time frame this way (1000 BC - 500 BC). Doesn't seem good. Maybe a special time and turn frame that gives many turns to a special time in the middle and then accelerates again when we have fewer civs (rome, carthage, celts, greeks, egypt and in the east only persia).
2) RFGW seems to follow an odd scheme. In RFC, the amount of civs present rises with the game time. In the modern era, there is the most going on, most civ present, most map populated. In "600 AD", we would in RFGW only have - if historical - a big Roman Empire and Persia that both crumble to barbarians, not really interesting. So maybe the mod could end earlier with the height of the Roman empire and eliminate the Huns thus?
3) On the other side, at the start not much is going on. I would thus advocate pushing the start date to a later time (babylon only spawned that late, the sumerians were earlier though). At the beginning you would have for quite a long time only 1 (or 2) civs only prolonging loading time. On the other hand, you can use the extra turns later on ;-)
4) "Civ Clusters/Opponents"
Rome-Carthage-Celts
Athens-Sparta-Macedonia
Byzantium-Huns-(Rome)
Persia-Babylon (1500 years between the two!!)
Hittite-Egypt (??? ) <-- For this to happen there must be no civs inbetween
Phoenicia-Hebrew ^^ thus need to spawn later, around 1200 BC
5) I want to further advocate for Assyria as a competition to Babylon which would make the clusters the following:
Hittites-Assyria-Babylon-(Phoenicia)
Egypt-Israel-Phoenicia
Enough arguments in the other posts
6) I am still not happy about the situation around "Syria", there seem to be too many civs for too few place?