I see your point... but at an airline this size, they simply have more than enough on their hands working to be excellent "Chief Pilots". Adding this to their plate is just not realistic.

It needs to be done by a group of pilots that are volunteers... have been vetted... and that know how to dig in to a pilot's past through their application, LoR's, and by other resources.

To do the "hiring job" well requires a lot of effort and focus from the interview pilots. The CP's don't have the bandwidth.