Who do you think would be the ideal candidate for this role, and how do I measure up?

Is there anything that you think is missing from my skill set/experience?

This question helps you to understand if the recruiter is concerned about any gaps in your experience or skill set. Listen carefully to the answer. You may have an opportunity to allay any concerns. Alternatively, if you do indeed have a skill or experience gap, it is an opportunity for you to convey your self-awareness and interest in training or development to bring you up to speed.