No, I want instructors to be instructors not en-route to another job.
But this only promotes elitism because how then would the financially strapped people get the flying experience that the airlines require? The present system may not be perfect, but, it gives students an opportunity to learn to fly (instructors work for very little) and in turn it gives the hour builder the chance to build hours for free and even get paid for the privilege!
How would it be possible to prevent instructors from moving off to the right hand seat of an airline? Bonding?