1. The league has fairly decent parity or it has a level of parity that it has happy with and does not feel the need to 'increase' parity. Parity is about the opportunity to be equal, not a guarantee.
2. It's a nice thought, but there's enough holes to drive a death star through.
Just to start, if a QB is claimed then he is 'protected', but any QB claimed can't be claimed again?
That right there already overlaps and makes one of them irrelevant. Throwing draft picks for lost QBs just makes it more of a 'cluster'.
Are you adding picks? Taking them away from other rounds? This starts to create a cluster. What's to stop teams from using this to 'create' draft picks? Get another team to claim your backup QB and get a free 2nd round pick?