The aim of an open door policy is to enable, and indeed encourage, everyone in the organisation to share any issues or views they have with their manager.
Some of the most valuable work you can do to succeed happens before you even set foot in the organisation as its leader.
Few people enjoy change and many fear and resist it, so getting everyone onside to your ideas early on will be crucial.
Before you can develop and lead your team to success you have to build it, but finding talented individuals is not enough.