One of the quirks I see is that when I click a game I learn more about how to play it but finding the actual links to play it are a lot harder. Yes, I eventually find them but I have no idea what to do when I click to the game page. Some (ok, most) people just wanna PLAY. They don't want to read anything, and will figure it out as they go.

So basically, make it easier to actually play games .. and spruce up your front page, but I'm sure someone else will give a more detailed feedback on that :)