Hi,
a detailed and well founded risk management has to be part of a good DD. It should cover all topics of the DD – from my perspective it has to be managed in the same way as risk management in a big project. But to answer the question precise, the biggest risk in my point of view is to underestimate the soft factors. A DD covers all the hard facts in a structured way and identifies risks and actions, but the soft factors for the employee, the owners and at least even the expectations and the fears of the employees on the buyer side are containing a lot potential risks.
