I wonder if it's possible to get the job applicants to evaluate each other? That way you have a process that automatically scales to the number of applicants you have. Exactly how to structure it so it can't be gamed/subverted is tricky, but you might imagine some team activity where the team does a task together, and then each person in the team is asked to so some kind of review of the other people in the team. If…
IME, the only times that it can go well is with people who don't think the results will matter. And in which case, why do it?
The one exception is someone who is already somewhat of a leader and isn't looking for a promotion, and so they don't have much desire to make themselves look better.