A simple look in the WB tech screen would do as well I suppose. I can't play civ at the moment but if someone else could check for the exact techs when Babylon has its first Longbowman, I think it would clarify a lot.
Some suggestions based on Canada 1700 AD:
1. You should make Northern Canada foreign area for Sweden (basically Viking) in 1700 AD. They perform really well and settled Markland in the Northern Canada. I can forgive if this is a 3000BC or 600AD scenario... but on 1700AD....
2. Did you just modified Nova Scotia? England (one of the civ with most CNM entry ever) just founded Sydney there.
3. I think you should add CNM entry to rename York to Toronto at some point.
4. I can not compete with America for settling the western part of Canada. By the time I spawn, America already have lots of cities that keep producing settlers. They even expanded up north and (refusing OB). I believe there will be time when the only way I can settle Vancouver is by sending ships to circumnavigate the Latin America.
2. Did you just modified Nova Scotia? England (one of the civ with most CNM entry ever) just founded Sydney there.
Playing as Byzantium I noticed that building the apostolic palace in Konstantinopolis is a very good strategy. You recieve extra culture (holy city) and have good relations with Europe. But it is too unhistorical.
It is better to make Hagia Sophia buildable. Hagia Sophia will trigger the Great Schism, and a city will recieve the apostolic palace. Moreover as a side effect the player who built Hagia Sophia will chose orthodoxy obligatorily (other players can chose either catholicism or orthodoxy).
In context with removing the yield from shrines, the effect of Hagia Sophia could replace it (+1 per city with state religion). An alternative effect could be +100if orthodoxy is state religion, since it is in fact a cathedral.