There is a steep learning curve to the GECK, but it is also enormously powerful. It may not be simplistic for anyone on earth to use, that's the trade-off. It's really more of an Advanced game editor, the same one that Bethesda level designers and quest makers used to build Fallout3. So in this case we got the actual game editor that Beth uses (minus some features), while Far Cry's modding was specifically built as a game-feature for anyone to use. There is a Huge difference between the two.
With the GECK we can do just about Anything imaginable to the game, but it is not for the meek of heart.
Miax