The ability to play custom campaigns has been completely removed from Warcraft 3. Also, you can't play single player games offline anymore, you have to create a game in the lobby, which means you can't save or use cheat codes. Not being able to save makes the majority of single player maps unplayable. Also, right now, single player maps won't even launch for me at all. When I try to start them the game just boots me out. So, my favorite feature of Warcraft 3, playing and making single player maps, which I've put so many thousands of hours in, has just been flat out removed from my favorite game. Unbelievable.