As Seraphim, we rarely host in-guild PvP activities. In order to give everyone a fair chance, we all create trial characters and gather in one of the Battle Arenas. This gives new members a chance to face off old and geared members. We use Battle Arena to organize a guild PvP tournament. The ultimate winner of the night gets guild allowance as a prize.
You can also demand to rent the AoA (Arena of Arsha). Unlike Battle Arena, AoA keeps track of wins and keeps the fighting organized. You can try for 2v2, 3v3, 4v4, and 5v5 in AoA and have fun.