Does the order really matter as far as the lore is concerned? My friends and I have proph and eotn, but im about to buy nightfall cause i really want a derv. I plan to get him over to proph pretty quick and unlock skills through pvp.Can we go proph>eotn and then nightfall, or will that mess up the story? I dunno if eotn is an all around guild wars expansion or if its a direct expansion to prophecies. Thanks in advance