Monopolis scenario map

I came up with this using Hexographer.  Looks a little bare right now, doesn't it?  OK, I printed out the blank map, got out the colored pencils, and came up with this sketch for my large-hex Ogre scenario, which involves the attempted capture of the huge city of  Monopolis.

Pretty easy to figure out the map: green = forest; blue = stream or river; T = town; scribbles = rubble; crater = crater.  I think I need some swamp in there as well to help slow down any Ogres that may happen along.  And I will probably need to playtest this more than once.  Meanwhile, any suggestions regarding this map?