The key features could include condensing the plot, focusing on the most significant events, and maintaining the essence of the characters' personalities.
One of the main features would likely be a streamlined narrative that still conveys the main themes and adventures of Don Quixote. Also, the language might be adapted to make it more accessible for a short story format without losing the charm of the original. Another aspect could be the selection of key scenes or moments that represent the overall story arc.