Maybe we need to shift focus to lowering the cost of False positive? The industry is willing to skip ton of great candidates that fail the "audition", just to avoid false positives. Otherwise great people and employees are ruled out, just because they can't reflect their true value at work in a stressed 1-2 hours interview. Cheaper false positive hiring may ease the pressure on the companies side to let them in. Having said that, because of stress, questions on interview should be 50%-60% difficult since the interviewee is not at 100%.