Answer:
external CEO with a heterogeneous top management team
Step-by-step explanation:
In simple words, the most suitable individual is someone from outside the organisation having relevant experience in management. The heterogeneity in the team will help the manager to understand the needs and desires of all the individuals that might be affected from the decisions they make.
The outside perspective will be good to see the problems that someone from inside might not be able to see. Also, the tenure should be long enough to completely impact the different corners of the organisational framework.