New battle arenas

I've noticed there are alot of empty islands on the battle isles, thinking, maybe a new one, next to the guild hall. Owned by the guild. Basic PvP, but you fight against other people in your guild or members in your alliance, or anyone that has access to your guild hall. You pick the size of your party (4-8) and type of battle (annihalation, priest and so on).

What do you think?

they already have that