I like your question, stein220 !  Good Move !

One of things that I enjoyed most about Sid Meier's Civ 4, was that you could generate a variety of basic Map/Geographic styles in that game, such as: desert-river terrain, mountain-highlands terrain, American "Great Plains" terrain, etc.  Of course, Civ4 also included the (by then, standard): continents, islands, and archipelago geographies (with or without polar ice caps too!) 

I already think that the map-generation feature of E:FE is excellent!  I am on record as having said so!  And I know that we can  NOT  get everything, that all of us would wish for, or ask for, or  BEG  for.      But at the same time, I really do love this particular suggestion; and I would love to see at least a few more varieties, of randomized map-styles, available.   

Maybe if enough other Beta-testers think so too, and will say so, (Hint, hint), the FE Development team will give this some serious consideration.

[ Late Edit ]  Whoa!  I had totally missed that Discussion thread entitled "Green, Brown and Purple", which was started back on April 22, 2012.  Good for DsRaider, in pointing it out ...