Another benefit of Kiviat charts is that you can place them in a dashboard or presentation and explain them quickly.
All of this information is great, but unless action is taken, little value will be seen.
As the project progresses, you should see the chart become more filled and the gaps eliminated. Remember that risk assessments are snapshots at any given point in the project. Since the risks change, you will need to perform multiple assessments throughout the project.
Also, keep in mind that any risk assessment can contain errors, biases, and misassumptions, so use your intuition and contingencies to balance this possibility.
This view of risk assessment is one that can keep your project on track, yet it seldom is performed on projects. If it is performed, it is presented at the end of the project. This is the one perspective that senior management and stakeholders need to see. Ideally, this type of risk assessment should be owned by the project manager, who is in the best position to take action.
I hope this adds a helpful, risk-based tool to your collection. For me, it has been very valuable