What is your customer discovery questionary?

I am preparing myself for a B2B2C customer discovery call next week and would love to learn what is your approach.

I am planning to ask:

• Is this solution something you see yourself using?
• How are you currently solving this issue?
• What kind of results do you expect from a new solution?
• When would you expect to see those kinds of results?
• What are the must-have features of a solution?