If one of your wing tips stalls, you will have a very fast roll and there is a high probability of entering a spin. Also if a part of the wing that is far aft

If one of your wing tips stalls, you will have a very fast roll and there is a high probability of entering a spin. Also if a part of the wing that is far aft stalls, then that can cause pitchup, making the stall worse. An aircraft with benign behavior stalls so that the nose stays pointing straight ahead with no roll or yaw but it drops (pitch).