I'm not sure this is the solution. The problem is hiring (or accepting for YC, College, etc) in general is a complicated process where the generally accepted solution doesn't work as well as we want it to.
The only real solution would be to get to know the people better, which takes too much time. We resort to things like the reference check because it's the only option that doesn't require massive amounts of time. Unfortunately there is no substitute for the time it takes to get to know someone.
Companies complain and complain about the hiring process, with people like the OP even resorting to subversion in an attempt to "de-risk" the process.
"The only real solution would be to get to know the people better..."
I totally agree. Read the resume/CV, run the technical test (if required), conduct the interview. If they seem good enough, hire them.
All the jobs I've ever had (perm and contract), had a probationary period during which I could be fired at will.
If a company cannot handle the financial strain of hiring and subsequently firing someone within the probationary period then perhaps they shouldn't be hiring someone in the first place?!
The only real solution would be to get to know the people better, which takes too much time. We resort to things like the reference check because it's the only option that doesn't require massive amounts of time. Unfortunately there is no substitute for the time it takes to get to know someone.