Leading a team means needing structure processes, so that everyone in the team is very clear on their role and the potential development opportunities for the future. That is the essence of HR Management - giving clarity In addition to allowing you a clear visual picture of the structure of your business as it currently is, you will also have a map of the experience and skills available to you.
In the case of this Skills and Experience Matrix, you will have a charted documentation of the skills every member of your team has - even if they are not currently utilising the skills for their current job. Every time an employee goes in to a training session, you will need to update your matrix, as all skills can become valuable as new roles in the business eventuate.
Your employees will appreciate you focusing on their skills, and you will be optimising the opportunity of the full resource available to you within the team. People love to offer as much as they can to your business, and they feel values and appreciated when you work towards optimising what they offer.