1: The Inner World

-have some spots on the map where you can enter the world. later in the game you should be able to build them either by city builds or map buildings

-do it like Age of Wonders but with some lava and crystel forests

-have the old vaulter faction down there (vaulters that didnt want to go to the surface)



2: From the Deep

-an Underwater Map like Anno 2070 with some aquatic races and factions

-they shouldnt be able to leave the deep in the early game but later with techs that allowes them to equipe units with suits to go out (and in for the surface races)

-in late game have a tech to build water/air domes to captuere citys

Both interesting ideas.

Yep... +0.999 to those, but only because I suspect that this would be both huge DLC, and I think there are other stuff more prioritary...

Ships. Frigates, cargo ships, submarines, destroyers, SHIPS. HARBORS AND SHIPS.