Personally I’m a hardcore gamer on the WvW but even more on GvG of GW2. If I am still this game is that I still have the possibility with my guild to fight other guilds teamfight. I think I’m not the only player to be in this case and I think you neglect many of the population of WvW players which played this “marginal system”.
Let me remind you the name of your game : “Guild Wars” it means what it means …
To comply with this concept I find it logical that you manage this system. You did it very well on GW1 with fights on guild halls or HoH system. Why not reproduce on a larger scale on GW2 ?