Free tournaments every Saturday or one day of the week for members would be a highly beneficial addition to the game. Free tournaments bring players that don't regularly PVP into the arena. With the addition of this rumored Player Vs. Player fix update on the horizon, free tournaments would bring an influx of new players to the arena and make for an amazing experience that I yearn for the PVP back when 60-70 was the level cap and 4/5 people participated in PVP. Since you can only do one or two tournaments a day, people wouldn't be gaining a huge advantage with the tickets.
Tournaments should really be more accessible to all players. They encourage participation in PvP from players who would normally never step foot in the arena, and are usually lots of fun for everyone involved, win or lose.