Require that IB sign-ups are at the monument of the attacker or defender, or at the placed IB totem, as originally intended.
The allowance of global sign-ups for IB's, first when it was just a scripts, and then when it was incorporated in the game itself, allows a small group in a region to bully a large group in a region, where forces from across the world can join in and tip the balance of power.
This has the effect that local open world PVP control of a region has no bearing on anything. This should not be LiF.