Block Trade Feature

I figured I would leave a suggestion here for the Developement Team to look into when they have the time. As the title states, I want this to be implemented because there have been times when a player has their Teleport spell interrupted because of some random jerk thinking that it would be okay to run up to the person Teleporting by opening a trade with them, causing them to stop their cast. This has happened in the past during Hunts or after completing a Behemoth/Odin encounter. I know there are other people out there besides me that are tired of this kind of harassment, just something to think about. Thank you for your time.