Couple of notes, but I can already say I'm very impressed with the result, nice job!
Eastern zone:
- Doesn't seem to have an easy to reach source of Copper
- Southern arm of the Crescent River seems food poor
- Forested Corn near the middle bulge of the river (this needing Mining to be improved. Deliberate?)
- Two sources of Marble.
- Area between inside the river seems resource poor compared to the other starting zones.
Southern zone:
- Also doesn't seem to have as many easily reachable sources of Copper compared to the northern and western zones.
- Area between S-W and S-E probably needs some more rivers if you want to mirror it with the north (but I suppose you just didn't have the time yet)
The other quadrants seem fine.
Central Area:
Doesn't seem very attractive to fight over right now. I'd either make it more interesting or impassable.
Overall:
- Lots of Raw Mana nodes, so potentially game-breaking if three different players build the Tower of Div. Maybe change them to specific mana types?
- The areas between the players don't seem to have either strategic holding points or scarce resources. Maybe put a source of Marble between each zone?
I didn't have the time to look at the wrapping area around the edges. If someone could have a look, otherwise it will have to wait until the weekend.
Again, nice work Commodore.