Withdrawing usually deals with a sneak and walking to break the tether or a transition into another area. Just killing LOS doesnt stop them "knowing" - which is essentially "I saw them here literally 6 seconds ago, Im going to keep walking in this direction"

What is the problem you are solving? Does your proposed change solve the problem? Is your change feasible? What else will be affected by your change? Will your change impact revenue? Does your change align with the goals and strategies of the organizations (Larian, WotC)?