No matter how many players you encounter in World PvP, PredatorFrames will fit them all. These are example frames I generated, but it has no limit to how many players it will track. The frames, however, may narrow quite a bit.
This is the addon picking up player frames from an attack on Lions Watch.
The addon will show flags, debuff stacks, diminishing returns, how many players are targeting each player, and the raid leader's target.
Picture of the addon in a battleground.
PredatorFrames also shows Orb possession in ToK.