I'm all for rank/class specific gear and especially various sets that give choice. For example let's take Marauder. R50 sets that focused on dex, vit or strength would all be useful in various ways to the class and would offer some choice to the player. Also having multiple sets allows you to stand out among others at your rank/class. Even if there were sets that were almost the same stat wise, just having the choice of looks is also important.