Assume you are an expert in a specific field, let’s say AI. You have ton of experience and knowledge of AI theory and practice. 
You are trying to sale your expertise to a client, how to target best use cases and assess your proposaed use cases for your client?
I have a framework for you to speed up your identification process for the use case proposal.
  Strategic importance: The use case has the potential to provide siginicant competitive advatage or can be monitize. 
Usually, customer, sales & marketing use cases is able to provide more stratrgic impact.
  Potential value: The use case impacting market size and penetration. customer churn, enterprice growth, etc 
considered to enable more value.
  Ease of consumption: The use case evaluated as to what extend it can utilized on regular business.
  Simplicity of data: The ease to collect the required data and the complexty & quality of data.
  Ease of analytics & modeling: The ease to develop models and perform analytics for the use case.
  Ease of implementation: The ease of integration into existing business, change management, model deployment on the production env.