The one thing I hate hate hate hate hate about the LFG interface is that someone else can create a separate party and then merge my party into it without my permission. Every other time I'm looking for a casual group for a dungeon path somebody does this to me and forces me into their party, which sometimes is even planning on a different path. Why doesn't this feature require permission from the group being grabbed?! GW1 had party invites/acceptance/denial in 2006!