It would be a better control mechanism. NeuroSky (the headset used here) is only good as an eye blink detector and even at that it’s not great. EEG reading on the forehead, without gel is always really bad because there are no obviously interpretable signals (frontal cortex is way more complex than, say motor regions or the occipital nerve), the skin is tougher due to no hair, and is way too much muscle interference.

Something with two electrodes behind ears (or wherever the muscles responsible for moving ears are) could be even used as a tool to train to move your (human) ears.