What I'm about to propose may seem unbalancing but I think it's actually balancing.

When a player attacks another, the defender gets a chance to attack back without losing honor points, even if the battle is dishonorable. The defender will still get honor points if the attacker is more powerful. This is only effective for the first attack in the next 24 hours. (Time can be changed)

Modifications and adjustments can be made on this suggestion as seen fit.