In the nicest possible way - nobody talented in my market of is going to take three days off from their job to come work on me on a random project - no matter how much I pay them. All the good/driven people are working on stuff.

A one-hour collaborative problem-solving interview is a great idea.

But, the challenge I have is that I want some kind of measure of aptitude that isn't subjective. I've seen that founders tend to overestimate their ability to basically 'vibe' someone based on interview and the point of this question is to try to hedge that.