They brought back the rep grinds for MoP and everyone complained about them. When the first put Oondasta it was apparently too difficult, but I would say the difficulty was in line with some of the world bosses in Vanilla or TBC. The legendary quest is a multi-month chain quest that gives a great reward, but now people say 'zomg everyone can get legendaries now!' They keep recycling these ideas, but every time they try to implement something that looks like it you get tons of qq over it. The truth is that people want convenience, they want access to content without arbitrary roadblocks.