Yes it can be played without 3rd party chat. However... Take this as just an example. You whisper the rank giver that you're currently online and you ask for a rank. He checks your inventory and spots a brittle bow. In the same time a player with a precise musket also whispers him and wants a rank. If you were giving ranks, would you give a rank to a player with a bow or to a player with a musket? Assuming only one empty spot is left. When you take a side in a fort fight, you must be aware of the simple thing - that side wants to win. To increase your chances, someone must filter players. Another example? You can't expect that someone will rank level 1 player and leave level 60 player aside. Ranking someone who could help you more than the other one is hardly an abuse.