What should mentors focus upon?
Work on mending habits and personalities of mentee.
To upgrade them to be agile, focused, accomodative and adaptable.
To understand and help in creating right habits and engage their time to deliver and prioritize.
To accept new things with open mindedness leading to transformation earlier and leading to progress. Reluctance only pushes the destination farther.
Skills will perish with time and newer skills will be born. Adaptability to new trends and reducing turnaround time in learning are the key to survive and thrive in the new world.