The pink dots are often metagamed, true, but there are other OOC issues to take into account. In real-life, people do not have different transition load times, do not randomly go AFK and get left behind. When people are travelling in a big cluster it's not very common to just lose somebody and have that person not be able to catch up. (I am thinking of sparsely populated areas, in a large city getting lost in the crowd is pretty easy). It is bad when people use this to magically track down somebody whose battle icon is flashing under their portrait, or when somebody mysteriously runs off without telling the party and somehow, magically, everyone finds them, but it is a good thing, I would say, in situations where somebody has a slow load time but otherwise no IC reason where they wouldn't be able to keep up with the group.