Magua`s new Normandy terrain is in development and may even knock DD`s superb grass, trees and bases off the number 1 spot. As for other stuff, Tiger, Marco, Gordon and Panzertruppen are the boys!
There are other excellent mods that supplement the above by many other authors, too many to mention in fact but you`ll find all the all new mod list at www.combat-missions.net. This will help you to locate every mod ever released.