Let's be honest the three-way system is just there from a time when they were trying to push the Grand company choice matters thing. It's never going to change as they would have to reimagine the maps in general and that's way too much money spent on PVP. If you have ever played Rival wings, which is the answer to this, you would know that it's usually lop sided with one team getting the swirly. I think you need to stop worrying so much and just enjoy the large-scale interactions for what they are, Casual PVP.