Should Missions Have A Personal Mission Statement

This past few years I have seen a trend where stakes, wards, and missions have developed mission statements.  I am not sure the extent that they go to to solicit stakeholders input.  Most have a top down approach.  It is harder to get missionaries or leaders to buy in to a mission statement that they had little involvement in formulating.  The fact that there are few stakes, wards, or even missions with individual mission statements is interesting in and of itself.  I wonder if it takes a business or educational mindset to buy in to the process.