seems like it would just get abused by a tribe losing a war to start eliminating their villages from the map for the winning tribe to take.
maybe only if its something you can do offensively ie cat an opponents backline to 0 in big wars. although would need to have some balance and no easy to just mass 0 hundreds of backline villages even with fang defense you could easily just throw a single nuke in front and destroy and entire backline.