Well, there is a cheat for it: CTRL + U. Just create a shortcut with cheat at the end. e.g. "C:\Program Files (x86)\Stardock Games\Elemental\Elemental.exe" cheat

If you don't want to play with cheats: what Heavenfall said

I think, something better, would be if you can remove the Fog of War just within your Zone of influence.

Personally, I don't mind the FoW, as it's realistic, you shouldn't see everything in the world and all. But, within your own Zone of Influence, I think you should, as it's like you had scouts surrounding your territory which is perfectly good explanation, maybe with time this can become moddable.