I don’t understand this kind of post. MMORPG had MMO in it for a good reason. 3/4 of the content in GW 2 is arlready doable in solo. If you do the same with dungeons, it’s th death of the PvE. Random groups have certains defaults, of course, but it’s the point of an online game, you meet people, some goods, some bads and you deal with it.
There is plenty of awesome solo Rpg, don’t try to kill the essence of a game.