Basically if you put my theory to use, where you construct everything as a framework and use copy/paste hierarchies to make your content... you could take creativity to a whole new level. You could make games with thousands of classes, millions of items.
Again, I think making a game is a matter of "FIGURING OUT" how to put the correct scripts and actors together. I think you can do a lot with just simple rigged materialed 3d models with basic animation clips. And I think anyone who tells you that it would take hundreds of hours to make an MMO is either lying or doesn't know what they're talking about. I truly think the whole world is messed up and that you really can put together an MMO in a few hours. I really think its about compiling graphics/actors/scripts inside of an editor and packaging your game to distribute it and run it in tandem with a server and a website. And I think this all can be done scientifically one step at a time... and thus mathematically very quickly.