TheChanger
Warlord
Basically, if in addition to the moral diplomacy of the world (good vs. evil) there was also a level of geographic diplomacy that pitted different preferred terrains against each other.
this idea is almost an extension of terraforming. something like invasive terraforming from each civ (such as Vjasjakii swamps etc) might be a bit unbalaced, especially ones that spread detremental terrain for other civs (again, swamps and coast from vjasjekii and even desert (newtah (they probably wont spread desert fyi)) or ice (Xayith))
i think having it spread outside the civs boarder could cripple other civs without a terraforming ability (ie Rylonia), and id much prefer for the terrain to be restricted within th civs borders.
THese terraforming abilities however could increase the diplomatic effect of having close bordes to other civs, and also using culture bombs. im fairly certain there will be some form of terraforming spells as well so civs will have to actively spread their terrain.