It is important to have corporate planning/strategy lead to what is health for the business as a whole. However, if care is not exercised, strategies can lead to destructive behaviors. Consider the financial crisis; I believe much of this was from strategies that were undertaken that had a high risk. Look at Starbuck that strategically tried to grow the business until it saturated the market. Consider Toyota who worked on strategies since 2002 to become the largest auto company in the world – at any expense.
I believe that organizations need to do a better job integrating predictive scorecards, analytically/innovatively determined strategies, and business improvement so that the business as a whole benefits. What I am suggesting is a business management system that goes beyond hoshin planning methodology.
If a description of what is to be done is being asked for, it is a good indication that there is not general agreement and clarification on what the function is to do. Hence, how about look into changing your department name to Enterprise System Management, which is responsible for the business management system integration as described in the article; i.e., scorecards, strategic planning, and business improvement?