some misc points:
*There is no possibilites as of now to script events. You can script starting positions, but thats it.
*Online encyclopedia on Middle earth:
http://www.glyphweb.com/arda/
*According to many sources, authoritative, and from ICE modules too, the sea of Nurn is somehow fertile, and populated either by Humans or Orcs. To see Mordor as a complete wasteland is a false view, IMHO.
"The name given to the southern regions of Mordor, more fertile than Gorgoroth in the north, in which the great inland sea of Núrnen lay. "