I thought the spirit of the Epic would be any land you could irrigate, now or eventually, anyway, so was confused about the confusion.
Lots of rules lawyers around looking for any break they can find, or just those who want clarity before hand? Interesting question.
My view of the "spirit" of the Epic:
-Any land that can be irrigated, now or in the future, cannot EVER get a mine on it. This would include all grassland, plains or desert on the map period, regardless of their location.
-The ONLY land that can have a mine or planted forest on it is hills, mountains and tundra.
-Captured land cannot be worked, i.e. should have ANY mines pillaged immediately, if it is not a hill, mountain or tundra BEFORE it is able to be worked.
That about right? Nice and simple rules. BTW, the specialists are pretty good. I had a 29 size city in Epic 38 that had exactly 9 corrupt shields, so the city was shield corruption free.